Difference between revisions of "Price identification"
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==Price tables== | ==Price tables== | ||
| − | + | All prices in shops are determined by an item's base price and then adjusted based on the player's CHA (as well as other factors like race in variants beyond vanilla). All values are subject to the same pricing algorithm, so a potion with a base price of 50z will have the same set of values as a scroll or piece of armor with the same base price. As such, all base item prices can be determined using the same price tables and then compared against the possible items for that base price. | |
| − | + | '''Note:''' due to the fact that there are some duplicated prices in how the math plays out, there is potential ambiguity in base prices if an item base price can fall into multiple price ranges (e.g. if there were potions of base price 0z and 2z it would be impossible to tell them apart aside from selling them). At current, however, most item categories avoid this so there are only a few areas where this can be confusing: | |
| + | |||
| + | * scrolls at 60/80z | ||
| + | * potions, rings, and wands at 150/200z | ||
| + | * spellbooks at 300/400z | ||
| + | |||
| + | In the tables below, two numbers are shown in parentheses with the buying price. The first number in parentheses is the price if you are charged either the unidentified surcharge or the sucker markup. The second number is the price with both of those surcharges. For the selling price, the number in parentheses is the amount of a randomly discounted offer. | ||
| + | |||
| + | Numbers in '''bold''' are prices that leave the base price ambiguous. | ||
| − | ==== | + | ====Master List - Shop Prices by Player Charisma==== |
<div class="toccolours"> | <div class="toccolours"> | ||
{|class="prettytable mw-collapsible mw-collapsed" | {|class="prettytable mw-collapsible mw-collapsed" | ||
| − | |+ class="nowrap" style="text-align:left" |''' | + | |+ class="nowrap" style="text-align:left" |'''Nethack 3.4.3 and earlier''' |
| − | !Base cost!![[Charisma|Cha]] <span class="nowrap">≤ 5</span>!!Cha <span class="nowrap">6–7</span>!!Cha <span class="nowrap">8–10</span>!!Cha <span class="nowrap">11–15</span>!!Cha <span class="nowrap">16–17</span>!!Cha 18!!Cha <span class="nowrap">≥ 19</span>!!Selling price | + | !Base cost!![[Charisma|Cha]] <span class="nowrap">≤ 5</span>!!Cha <span class="nowrap">6–7</span>!!Cha <span class="nowrap">8–10</span>!!Cha <span class="nowrap">11–15</span>!!Cha <span class="nowrap">16–17</span>!!Cha 18!!Cha <span class="nowrap">≥ 19</span>!!Selling price |
| + | |- | ||
| + | | 0 ||10 (12/16)||7 (9/12)||6 (8/10)||5 (6/8)||4 (5/6)||4 (4/6)||2 (3/4)||0 (0) | ||
| + | |- | ||
| + | | 2 ||10 (12/16)||7 (9/12)||6 (8/10)||5 (6/8)||4 (5/6)||4 (4/6)||2 (3/4)||1 (1) | ||
|- | |- | ||
| − | | 8 ||16 (20/26)||12 (15/19)||10 (13/17)||8 (10/13)||6 (8/10)||6 (7/9)||4 (5/6)||4 (3) | + | | 8 ||16 (20/26)||12 (15/19)||10 (13/17)||8 (10/13)||6 (8/10)||6 (7/9)||4 (5/6)||4 (3) |
|- | |- | ||
| − | | | + | | 20 ||40 (52/68)||30 (39/51)||26 (34/45)||20 (26/34)||15 (20/26)||14 (18/23)||10 (13/17)||10 (8) |
|- | |- | ||
| − | | 50 ||100 (132/176)||75 (99/132)||66 (88/117)||50 (66/88)||38 (50/66)||34 (44/59)||25 (33/44)||25 (19) | + | | 30 ||60 (80/106)||45 (60/79)||40 (53/70)||30 (40/53)||23 (30/40)||20 (27/36)||15 (20/26)||15 (12) |
| − | + | |- | |
| − | + | | 40 ||80 (106/140)||60 (79/105)||53 (70/93)||40 (53/70)||30 (40/53)||27 (36/47)||20 (26/35)||20 (15) | |
| − | + | |- | |
| − | + | | 50 ||100 (132/176)||75 (99/132)||66 (88/117)||50 (66/88)||38 (50/66)||34 (44/59)||25 (33/44)||25 (19) | |
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|- | |- | ||
| − | | | + | | '''60''' ||120 ('''160'''/'''212''')||90 ('''120'''/'''159''')||80 ('''106'''/'''141''')||60 ('''80'''/'''106''')||45 ('''60'''/'''80''')||40 ('''54'''/'''71''')||30 ('''40'''/'''53''')||'''30''' (23) |
|- | |- | ||
| − | | | + | | '''80''' ||'''160''' ('''212'''/282)||'''120''' ('''159'''/211)||'''106''' ('''141'''/188)||'''80''' ('''106'''/141)||'''60''' ('''80'''/106)||'''54''' ('''71'''/94)||'''40''' ('''53'''/70)||40 ('''30''') |
|- | |- | ||
| − | | | + | | 100 ||200 (266/354)||150 (199/265)||133 (177/236)||100 (133/177)||75 (100/133)||67 (89/118)||50 (66/88)||50 (38) |
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|- | |- | ||
| − | | | + | |'''150''' ||300 ('''400'''/'''532''')||225 ('''300'''/'''399''')||200 ('''266'''/'''354''')||150 ('''200'''/'''266''')||113 ('''150'''/'''200''')||100 ('''134'''/'''178''')||75 ('''100'''/'''133''')||'''75''' (57) |
|- | |- | ||
| − | | | + | | 175 ||350 (466/620)||262 (349/465)||233 (310/413)||175 (233/310)||132 (175/233)||117 (156/207)||87 (116/155)||87 (66) |
|- | |- | ||
| − | | | + | |'''200''' ||'''400''' ('''532'''/708)||'''300''' ('''399'''/531)||'''266''' ('''354'''/472)||'''200''' ('''266'''/354)||'''150''' ('''200'''/266)||'''134''' ('''178'''/236)||'''100''' ('''133'''/177)||100 ('''75''') |
|- | |- | ||
| − | | | + | | 250 ||500 (666/888)||375 (499/666)||333 (444/592)||250 (333/444)||188 (250/333)||167 (222/296)||125 (166/222)||125 (94) |
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|- | |- | ||
| − | | | + | | 300 ||600 (800/1066)||450 (600/799)||400 (533/710)||300 (400/533)||225 (300/400)||200 (267/356)||150 (200/266)||150 (113) |
|- | |- | ||
| − | | | + | | 500 ||1000 (1332/1776)||750 (999/1332)||666 (888/1184)||500 (666/888)||375 (500/666)||334 (444/592)||250 (333/444)||250 (188) |
|- | |- | ||
| − | | | + | | 600 ||1200 (1600/2133)||900 (1200/1600)||800 (1067/1422)||600 (800/1067)||450 (600/800)||400 (533/711)||300 (400/533)||300 (225) |
|- | |- | ||
| − | | | + | | 700 ||1400 (1867/2489)||1050 (1400/1867)||933 (1244/1659)||700 (933/1244)||525 (700/933)||467 (622/830)||350 (467/622)||350 (263) |
|} | |} | ||
</div> | </div> | ||
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<div class="toccolours"> | <div class="toccolours"> | ||
{|class="prettytable mw-collapsible mw-collapsed" | {|class="prettytable mw-collapsible mw-collapsed" | ||
| − | |+ class="nowrap" style="text-align:left" |''' | + | |+ class="nowrap" style="text-align:left" |'''Nethack 3.6.0 and later''' |
| − | !Base cost!![[Charisma|Cha]] <span class="nowrap">≤ 5</span>!!Cha <span class="nowrap">6–7</span>!!Cha <span class="nowrap">8–10</span>!!Cha <span class="nowrap">11–15</span>!!Cha <span class="nowrap">16–17</span>!!Cha 18!!Cha <span class="nowrap">≥ 19</span>!!Selling price | + | !Base cost!![[Charisma|Cha]] <span class="nowrap">≤ 5</span>!!Cha <span class="nowrap">6–7</span>!!Cha <span class="nowrap">8–10</span>!!Cha <span class="nowrap">11–15</span>!!Cha <span class="nowrap">16–17</span>!!Cha 18!!Cha <span class="nowrap">≥ 19</span>!!Selling price |
|- | |- | ||
| − | | | + | | 0 ||10 (13/18)||8 (10/13)||7 (9/12)||5 (7/9)||4 (5/7)||3 (4/6)||3 (3/4)||0 (0) |
|- | |- | ||
| − | | | + | | 2 ||10 (13/18)||8 (10/13)||7 (9/12)||5 (7/9)||4 (5/7)||3 (4/6)||3 (3/4)||1 (1) |
|- | |- | ||
| − | | | + | | 8 ||16 (21/28)||12 (16/21)||11 (14/19)||8 (11/14)||6 (8/11)||5 (7/9)||4 (5/7)||4 (3) |
|- | |- | ||
| − | | | + | | 20 ||40 (53/71)||30 (40/53)||27 (36/47)||20 (27/36)||15 (20/27)||13 (18/24)||10 (13/18)||10 (8) |
|- | |- | ||
| − | | | + | | 30 ||60 (80/107)||45 (60/80)||40 (53/71)||30 (40/53)||23 (30/40)||20 (27/36)||15 (20/27)||15 (11) |
|- | |- | ||
| − | | | + | | 40 ||80 (107/142)||60 (80/107)||53 (71/95)||40 (53/71)||30 (40/53)||27 (36/47)||20 (27/36)||20 (15) |
|- | |- | ||
| − | | | + | | 50 ||100 (133/178)||75 (100/133)||67 (89/119)||50 (67/89)||38 (50/67)||33 (44/59)||25 (33/44)||25 (19) |
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| − | | | + | | '''60''' ||120 ('''160'''/'''213''')||90 ('''120'''/'''160''')||80 ('''107'''/'''142''')||60 ('''80'''/'''107''')||45 ('''60'''/'''80''')||40 ('''53'''/'''71''')||30 ('''40'''/'''53''')||'''30''' (23) |
|- | |- | ||
| − | | | + | | '''80''' ||'''160''' ('''213'''/284)||'''120''' ('''160'''/213)||'''107''' ('''142'''/190)||'''80''' ('''107'''/142)||'''60''' ('''80'''/107)||'''53''' ('''71'''/95)||'''40''' ('''53'''/71)||40 ('''30''') |
|- | |- | ||
| − | | | + | | 100 ||200 (267/356)||150 (200/267)||133 (178/237)||100 (133/178)||75 (100/133)||67 (89/119)||50 (67/89)||50 (38) |
|- | |- | ||
| − | | | + | |'''150''' ||300 ('''400'''/'''533''')||225 ('''300'''/'''400''')||200 ('''267'''/'''356''')||150 ('''200'''/'''267''')||113 ('''150'''/'''200''')||100 ('''133'''/'''178''')||75 ('''100'''/'''133''')||'''75''' (56) |
|- | |- | ||
| − | | | + | | 175 ||350 (467/622)||263 (350/467)||233 (311/415)||175 (233/311)||131 (175/233)||117 (156/207)||88 (117/156)||88 (66) |
|- | |- | ||
| − | | 200 ||400 (533/711)||300 (400/533)||267 (356/474)||200 (267/356)||150 (200/267)||133 (178/237)||100 (133/178)||100 (75) | + | |'''200''' ||'''400''' ('''533'''/711)||'''300''' ('''400'''/533)||'''267''' ('''356'''/474)||'''200''' ('''267'''/356)||'''150''' ('''200'''/267)||'''133''' ('''178'''/237)||'''100''' ('''133'''/178)||100 ('''75''') |
|- | |- | ||
| − | | | + | | 250 ||500 (667/889)||375 (500/667)||333 (444/593)||250 (333/444)||188 (250/333)||167 (222/296)||125 (167/222)||125 (94) |
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| − | | | + | |'''300''' ||600 ('''800'''/'''1067''')||450 ('''600'''/'''800''')||400 ('''533'''/'''711''')||300 ('''400'''/'''533''')||225 ('''300'''/'''400''')||200 ('''267'''/'''356''')||150 ('''200'''/'''267''')||'''150''' (113) |
|- | |- | ||
| − | | | + | |'''400''' ||'''800''' ('''1067'''/1422)||'''600''' ('''800'''/1067)||'''533''' ('''711'''/948)||'''400''' ('''533'''/711)||'''300''' ('''400'''/533)||'''267''' ('''356'''/474)||'''200''' ('''267'''/356)||200 ('''150''') |
|- | |- | ||
| − | | | + | | 500 ||1000 (1333/1778)||750 (1000/1333)||667 (889/1185)||500 (667/889)||375 (500/667)||333 (444/593)||250 (333/444)||250 (188) |
|- | |- | ||
| − | | | + | | 600 ||1200 (1600/2133)||900 (1200/1600)||800 (1067/1422)||600 (800/1067)||450 (600/800)||400 (533/711)||300 (400/533)||300 (225) |
|- | |- | ||
| − | | | + | | 700 ||1400 (1867/2489)||1050 (1400/1867)||933 (1244/1659)||700 (933/1244)||525 (700/933)||467 (622/830)||350 (467/622)||350 (263) |
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|} | |} | ||
</div> | </div> | ||
| + | |||
| + | ===Magical armor=== | ||
| + | |||
| + | Positive [[enchantment]] on a piece of armor increases the base price by 10zm per point of enchantment. In theory, a +2 or better pair of fumble boots might be confused for one of the much more useful 50zm boots, but the probability for positive enchantments on harmful items is too low to be worth worrying about. | ||
<div class="toccolours"> | <div class="toccolours"> | ||
| − | {|class="prettytable mw-collapsible" | + | {|class="prettytable mw-collapsible mw-collapsed" |
| − | |+ class="nowrap" style="text-align:left" |'''Prices | + | |+ class="nowrap" style="text-align:left" |'''Equipment Base Prices Master List''' |
| − | !Base cost!![[ | + | ! Base cost !! Sell price !! [[Helm]] !! [[Cloaks]] !! [[Gloves]] !! [[Boots]] |
|- | |- | ||
| − | | | + | | 2 || 1 (1) || || [[mummy wrapping]] || || |
|- | |- | ||
| − | | | + | | 8 || 4 (3) || || || [[leather gloves]] || [[elven boots]], [[kicking boots]] |
|- | |- | ||
| − | | | + | | 10 || 5 (4) || [[helmet]] || || || |
|- | |- | ||
| − | | | + | | 30 || 15 (11) || || || || [[fumble boots]], [[levitation boots]] |
|- | |- | ||
| − | | | + | | 40 || 20 (15) || || [[leather cloak|leather]], [[orcish cloak|orcish]] ("coarse mantelet") || || |
|- | |- | ||
| − | | | + | | 50 || 25 (19) || {{of|helm|brilliance|opposite alignment|telepathy}} || [[alchemy smock]] ("apron"), {{of|cloak|displacement}}, [[dwarvish cloak|dwarvish]] ("hooded cloak"), [[oilskin cloak|oilskin]] ("slippery cloak"), {{of|cloak|protection}}, [[robe]] ("robe") || {{of|gauntlets|dexterity|fumbling|power}} || [[jumping boots]], [[speed boots]], [[water walking boots]] |
|- | |- | ||
| − | | | + | | 60 || 30 (23) || || [[elven cloak|elven]] ("faded pall"), {{of|cloak|invisibility|magic resistance}} || || |
|} | |} | ||
</div> | </div> | ||
| − | + | ====Helms==== | |
| + | All magical [[randomized appearance|randomized]] [[helm]]s ({{of|helm|brilliance|opposite alignment|and=1|telepathy}}) cost 50zm; the [[helmet]] costs 10zm. | ||
| + | |||
| + | ====Cloaks==== | ||
| + | The cloaks of displacement and protection both cost 50zm, and are the only ones at that price with a randomized appearance. If a cloak costs 60zm and has a randomized appearance, then it is either invisibility, magic resistance, or a +1 cloak of the first two types. | ||
| + | |||
| + | ====Gloves==== | ||
| + | All magical [[gloves]] ({{of|gauntlets|dexterity|fumbling|and=1|power}}) cost 50zm; [[leather gloves]] cost 8zm. | ||
| + | |||
| + | ====Boots==== | ||
| + | [[Fumble boots]] and [[levitation boots]] are both 30zm, but are of different [[weight]]s. They are often [[cursed]]. | ||
| + | |||
| + | [[Speed boots]], [[jumping boots]], and [[water walking boots]] are all priced at 50zm. They are easily identified once worn: speed boots auto-identify if you are not already very fast ([[potion of speed]] or {{spell of|haste self}} spell), jumping boots allow you to [[jump]], and boots of water walking are otherwise mundane. | ||
| + | |||
| + | [[Elven boots]] cause you to "walk very quietly" and self-identify if you are not already [[stealth]]y. [[Kicking boots]] are made of metal, and consequently add to [[spell]] failure percentage. | ||
| − | + | ===Accessories=== | |
| − | + | ====Amulets==== | |
| + | All amulets have a [[weight]] of 20, are made of [[iron]], and have a base price of 150 [[zorkmid]]s, with three exceptions: [[The Eye of the Aethiopica]] has a base price of 4000 zorkmids, the Amulet of Yendor is made of [[mithril]] and has a base price of 30000 zorkmids, and [[cheap plastic imitations of the Amulet of Yendor]] are made of [[plastic]] and are worth 0 zorkmids. | ||
| − | ===Rings=== | + | ====Rings==== |
<div class="toccolours"> | <div class="toccolours"> | ||
{|class="prettytable mw-collapsible mw-collapsed" | {|class="prettytable mw-collapsible mw-collapsed" | ||
| − | |+ class="nowrap" style="text-align:left" |'''Prices | + | |+ class="nowrap" style="text-align:left" |'''Ring Prices''' |
| − | !Base cost | + | ! Base cost !! Selling price !! Ring types |
|- | |- | ||
| − | | 100 || | + | | 100 || 50 (38) || {{ring of|adornment|hunger}}*, {{ring of|protection|protection from shape changers|stealth|sustain ability|warning}} |
|- | |- | ||
| − | | 150 || | + | | '''150''' || 75 (57) || {{ring of|aggravate monster}}*, {{ring of|cold resistance|gain constitution|gain strength|increase accuracy|increase damage}}, {{ring of|invisibility|poison resistance|see invisible|shock resistance}} |
|- | |- | ||
| − | | 200 || | + | | '''200''' || 100 (75) || {{ring of|fire resistance|free action|levitation|regeneration|searching}}, {{ring of|slow digestion|teleportation}}* |
|- | |- | ||
| − | | 300 | + | | 300 || 150 (113) || {{ring of|conflict|polymorph}}*, {{ring of|polymorph control|teleport control}} |
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|} | |} | ||
</div> | </div> | ||
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The 300zm rings include the rings of {{ring of|conflict|teleport control|polymorph|and=1|polymorph control}}. The first two are among the most coveted items in the game and are frequent [[wish]] targets, however the ring of polymorph means that 300zm rings are not generally safe to wear. Conflict can still be easily identified by wearing it for a turn or two around a peaceful monster (remember that a [[shopkeeper]], [[aligned priest]], or your Quest leader are probably not wise choices). Teleport control can also be identified by putting on the ring and triggering a teleport (via trap, scroll, wand, etc.) If your 300zm ring is neither of these, do not wear it; use a scroll, spell, a handy [[sink]] or a source of [[enlightenment]] to reliably identify the other 300zm rings. Alternately, a riskier method of determining whether a 300zm ring is safe to wear is simply to wear it for a few hundred turns without wearing a [[shirt]], [[cloak]], or [[body armor]] (or wearing [[junk]] armor); that way, if you [[polymorph]] you will not break your useful armor. | The 300zm rings include the rings of {{ring of|conflict|teleport control|polymorph|and=1|polymorph control}}. The first two are among the most coveted items in the game and are frequent [[wish]] targets, however the ring of polymorph means that 300zm rings are not generally safe to wear. Conflict can still be easily identified by wearing it for a turn or two around a peaceful monster (remember that a [[shopkeeper]], [[aligned priest]], or your Quest leader are probably not wise choices). Teleport control can also be identified by putting on the ring and triggering a teleport (via trap, scroll, wand, etc.) If your 300zm ring is neither of these, do not wear it; use a scroll, spell, a handy [[sink]] or a source of [[enlightenment]] to reliably identify the other 300zm rings. Alternately, a riskier method of determining whether a 300zm ring is safe to wear is simply to wear it for a few hundred turns without wearing a [[shirt]], [[cloak]], or [[body armor]] (or wearing [[junk]] armor); that way, if you [[polymorph]] you will not break your useful armor. | ||
| − | === | + | |
| + | |||
| + | ===Consumable Items=== | ||
| + | |||
<div class="toccolours"> | <div class="toccolours"> | ||
{|class="prettytable mw-collapsible mw-collapsed" | {|class="prettytable mw-collapsible mw-collapsed" | ||
| − | |+ class="nowrap" style="text-align:left" |'''Prices | + | |+ class="nowrap" style="text-align:left" |'''Consumable Items Base Prices Master List''' |
| − | !Base cost!![[ | + | ! Base cost !! Sell price* !! [[Scrolls]] !! [[Potions]] !! [[Wands]] !! [[Spellbooks]] |
|- | |- | ||
| − | | | + | | 0 || 0 || || {{potion of|water}} (uncursed) || || || |
|- | |- | ||
| − | | | + | | 20 || 10 (8) || {{scroll of|identify}} || || || |
|- | |- | ||
| − | | | + | | 50 || 25 (19) || {{scroll of|light}} || {{potion of|booze|fruit juice|see invisible|sickness}} || || |
|- | |- | ||
| − | | | + | | '''60''' || 30 (23) || {{scroll of|blank paper}} ("unlabeled scroll"), {{scroll of|enchant weapon}} || || || |
|- | |- | ||
| − | | | + | | '''80''' || 40 (30) || {{scroll of|enchant armor|remove curse}} || || || |
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| − | | 100 || | + | | 100 || 50 (38) || {{scroll of|confuse monster|destroy armor|fire|food detection|gold detection}}, {{scroll of|magic mapping|scare monster|teleportation}} || {{potion of|confusion|extra healing|hallucination|healing|holy water}} ("blessed clear potion"), {{potion of|unholy water}} ("cursed clear potion"), {{potion of|restore ability|sleeping}} || {{wand of|light|nothing}} || Level 1 books: {{spellbook of|force bolt|protection|detect monsters|light|sleep}}, {{spellbook of|jumping|healing|knock}} |
|- | |- | ||
| − | | | + | | '''150''' || 75 (56) || || {{potion of|blindness|gain energy|invisibility|monster detection|object detection}} || {{wand of|digging|enlightenment|locking|magic missile|make invisible}}, {{wand of|opening|probing|secret door detection|slow monster|speed monster}}, {{wand of|striking|undead turning}} || |
|- | |- | ||
| − | | 175 || | + | | 175 || 88 (66) || || || {{wand of|cold|fire|lightning|sleep}} || |
|- | |- | ||
| − | + | | '''200''' || 100 (75) || {{scroll of|amnesia|create monster|earth|taming}} || {{potion of|enlightenment|full healing|levitation|polymorph|speed}} || {{wand of|cancellation|create monster|polymorph|teleportation}} || Level 2 books: {{spellbook of|magic missile|drain life|create monster|detect food|confuse monster}}, {{spellbook of|slow monster|cure blindness|wizard lock}} | |
|- | |- | ||
| − | | | + | | 250 || 125 (94) || || {{potion of|acid|oil}} || || |
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| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
|- | |- | ||
| − | | | + | | '''300''' || 150 (113) || {{scroll of|charging|genocide|punishment|stinking cloud}} || {{potion of|gain ability|gain level|paralysis}} || || Level 3 books: {{spellbook of|remove curse|clairvoyance|detect unseen|identify|cause fear}}, {{spellbook of|charm monster|haste self|cure sickness|extra healing|stone to flesh}} |
|- | |- | ||
| − | + | | '''400''' || 200 (150) || || || || Level 4 books: {{spellbook of|cone of cold|fireball|detect treasure|invisibility|levitation}}, {{spellbook of|restore ability}} | |
|- | |- | ||
| − | | 500 || | + | | 500 || 250 (188) || || || {{wand of|death|wishing}} || Level 5 books: {{spellbook of|magic mapping|dig}} |
|- | |- | ||
| − | | 600 || | + | | 600 || 300 (225) || || || || Level 6 books: {{spellbook of|create familiar|turn undead|teleport away|polymorph}} |
|- | |- | ||
| − | | 700 || | + | | 700 || 350 (263) || || || || Level 7 books: {{spellbook of|finger of death|cancellation}} |
|} | |} | ||
</div> | </div> | ||
| + | (*) - sell prices are listed according to Nethack 3.6.0 and later - earlier versions may be off by a few zorkmids due to rounding. | ||
| + | |||
| + | ====Scrolls==== | ||
| + | If the scroll costs '''20zm''', '''50zm''', or '''60zm''', it is uniquely identified. Identification of more expensive scrolls usually involves using the spell or scroll of [[Identification#Magical_identification|identify]]. If you choose to read an unknown scroll, you should always make sure the unknown scroll is not cursed, and never read it while confused. | ||
| + | |||
| + | If the scroll costs '''80zm''', it is either {{scroll of|enchant armor|or=1|remove curse}}. Both are harmless, unless the scroll is cursed or you are confused. Before reading, you may want to bless the scroll, wear only armor you want to enchant, and hold all the cursed items you want to uncurse. | ||
| + | |||
| + | Among scrolls that cost '''100zm''', there are two dangerous scrolls, {{scroll of|fire|and=1|destroy armor}}. Before reading, to protect from ill effects of the former, put all your scrolls, potions, and spellbooks into a container, or into a closet, or leave them on a different level, or just leave them at least 2 squares from you (but then you should beware of the danger of them being picked up by a monster if you encountered a [[scroll of teleportation]]. To protect from ill effects of both scrolls, make sure all your armor, except a shirt covered by a body armor or cloak, and body armor covered by a cloak, is something you can afford to lose. | ||
| + | |||
| + | If the scroll costs '''200zm''', the only dangerous scroll is {{scroll of|amnesia}}, but it is really bad, and you cannot protect from it. Unless you have identified the scroll of amnesia, don't read an unkown 200-zorkmid scroll. Identify it by other means. | ||
| + | |||
| + | If the scroll costs '''300zm''', the only dangerous scroll is {{scroll of|punishment}}. In Nethack 3.4.3, there is a simple way to get rid of the heavy iron ball, involving a pit and a boulder, but since 3.6.0, it doesn't work. Don't read the scroll unless you have non-cursed scroll of remove curse or a wand of opening, or unless you know and can cast a knock spell, or can polymorph into a nymph or metallivore. Alternatively, you can bless the scroll and then read it. Blessed scrolls of punishment are harmless, and blessed scrolls of genocide and charging are more powerful than uncursed scrolls. Finally, if you are absolutely sure it is not a scroll of genocide, you can read it while confused. Beware! Reading a scroll of genocide while confused would genocide your own race, thus killing you, even if you are wearing an [[amulet of life saving]]. | ||
| + | |||
| + | ====Potions==== | ||
| + | If the potion is water (clear potion), price gives some information about its [[beatitude]]. If the price is 0, the water is uncursed; otherwise it is either [[Potion of holy water|holy]] or {{potion of|unholy water}}. | ||
| + | |||
| + | If the price is 250zm, you can ensure it is not cursed, then try to [[apply]] it. If it is a potion of oil, it will be lit. Do not do this when the potion is owned by a shop, or you will be forced to pay for the potion and will be charged [[Yendorian Fuel Tax]]. | ||
| + | |||
| + | Otherwise, price identification of a potion usually includes quaffing it. See [[Potion#Price identification then quaffing|Potion § Price identification then quaffing]] for more information. | ||
| + | |||
| + | ====Wands==== | ||
| + | It is usually better to [[Wand#Engrave-identification|engrave ID]] wands to determine their identity, however base 175zm wands found in shops are all useful ({{wand of|cold|sleep|fire|or=1|lightning}}), price identification can distinguish a [[wand of sleep]] from a [[wand of death]] without using another [[charge]], any wand that makes engravings vanish that has a base price of 150zm is a [[wand of make invisible]], and any wand that gives no message when engraved with a base price of 100zm is a [[wand of nothing]]. | ||
| + | |||
| + | ====Spellbooks==== | ||
Determining the level of a spellbook can be very useful for spellcasters, since it can eliminate books that are much too high level to be read, and reveal books that should be easy to read. However, knowing the level of a spellbook is not very helpful unless the book is also [[BUC]] identified. | Determining the level of a spellbook can be very useful for spellcasters, since it can eliminate books that are much too high level to be read, and reveal books that should be easy to read. However, knowing the level of a spellbook is not very helpful unless the book is also [[BUC]] identified. | ||
Revision as of 04:44, 31 July 2022
Price identification is the tactic of using the price of an item to informally identify it. One can use the "buy price", the price of an item in shops, or the "sell price", the price that a shopkeeper offers when you try to sell an item. The sell price is easier to use because it is not affected by your charisma. Even if you have enough scrolls of identify and no conducts in mind, pricing lets you use those scrolls to prioritize the most important items.
NetHack 3.6.0 introduced small changes to the shopkeeper prices that make older price guides slightly inaccurate (by 1–2 zorkmids). The tables in § Price tables are duplicated for the 3.4.3 and 3.6.0 mechanics.
Contents
Base price
Base price is the listed price of the item, with following additions:[1][2]
- Base price of partly eaten food, uncursed water, and (x:-1) wands is 0.
- For positively enchanted armor and weapon (not weapon tools), 10 zorkmids is added for each point of enchantment. Negative enchantment does not influence the price.
- Artifacts have their own base prices, and special rules. See below for more information.
Sell price
When you sell an item, the price will be 1⁄2 the base price of the item, or 1⁄3 the base price if you are a dupe.
One quarter of all shopkeepers will additionally reduce all offers for items you haven't identified by 25%, based on their internal monster ID number.[3] In order to tell whether a given shopkeeper is doing this, you can drop an item that you have informally identified in order to see whether they make the 25% reduction on it. If they do, you can conclude that other objects' sell prices are being reduced.
The price of unidentified gems is an exception: it will be 3 to 7, 3 to 8, or 3 to 9 zorkmids depending on the shopkeeper. The same shopkeeper will always offer the same price for the same kind of gems.[4] (Note that if you know your unidentified gem is glass, it is profitable to sell it before identifying.) Unidentified gray stones are never subject to any price reduction.
When you sell a non-empty container, the price of its contents will be added to its price. If you agree to a sale, all its contents become the property of the shop.
If the shopkeeper has less money than the sell price, he offers "only" as much as he has, e.g., "Asidonhopo offers only 123 zorkmids for your diamond."
If the shopkeeper has no money at all, he offers you a credit for 90% of its sell price (or for the whole sell price if that is one zorkmid).
Buy price
When you buy a food item, the base price is doubled if you are hungry, tripled if you are weak, quadrupled if you are fainting.[1][2].
If the base price is 0, it becomes 5 zorkmids (there's no such thing as a free lunch).
If an item is an unidentified glass gem, it is priced as a random precious gem of the same color. The same gem in the same game will be sold for the same price.
If an item is unidentified, but not a gem, there is 25% chance that the price will be multiplied by 4⁄3.
If you are a dupe, the price is further multiplied by 4⁄3.
Then the price is further multiplied by a coefficient depending on your charisma:
| Charisma: | ≤ 5 | 6–7 | 8–10 | 11–15 | 16–17 | 18 | ≥ 19 |
|---|---|---|---|---|---|---|---|
| Buy price multiplier: | 2 | 11⁄2 | 11⁄3 | 1 | 3⁄4 | 2⁄3 | 1⁄2 |
Pricing and Dupes
You are considered a dupe if you are either a Tourist below experience level 15, or wearing a shirt without body armor or cloak, or wearing a dunce cap. Dupes are offered lower sell prices and charged higher buy prices.
3.4.3 vs 3.6.0
In Nethack 3.4.3, all surcharges and price reductions are applied sequentially, using integer arithmetic. For example, if a character with charisma 7 buying an item with base price of 100 is charged an unidentified surcharge, the shopkeeper's price is calculated as follows:
- 100 base price
- 4⁄3 unidentified surcharge multiplier = 100 × 4⁄3 = 133
- 3⁄2 charisma multiplier = 133 × 3⁄2 = 199
In 3.6.* versions, the calculation accumulates integer multipliers and divisors for all adjustments, then applies these once at the end to get the effective price. Thus for the same example, the calculation will be:
- (4⁄3) × (3⁄2) = 12⁄6
- 100 × 12⁄6 = 200
This sometimes results in prices 1 to 2 zorkmids higher or lower than would be obtained in previous versions. The stated intention of this change is to make price identification harder by ensuring that the price of items marked up twice more often equals another base price, e.g. 200zm instead of 199zm. Another consequence of this method is that the order in which adjustments are applied no longer matters.
Artifacts
Artifacts have their own base prices. For example, the price of Excalibur, Vorpal Blade, or Mjollnir is 4000; the price of Sting is only 800; the prices of quest artifacts are from 1500 to 8000. See Source:NetHack_3.4.3/include/artilist.h and Source:NetHack_3.6.0/include/artilist.h for the full table.
When you sell an artifact, its base price is considered to be 1⁄4 of the listed value, and the rules above are applied. For example, you can sell Sting for 800⁄4 = 200 zorkmids.
When you buy an artifact, all the rules above are applied, and then the final price is multiplied by 4.
Informally, this means that shopkeepers sell artifacts at exorbitant prices, and buy them at low prices.
Further strategies
General stores are very useful for price identification because they will offer to buy all types of items. However, you can still price-identify any object (unbreakable or in a bag of holding) in any store by throwing the item in to the shop from outside. If the item is fragile, you can have your pet carry it in, in a container if the item is cursed. Be aware that this will relinquish ownership of the item (and the container, if any) to the shopkeeper, who will then try to sell it to you. You will need to pay the asking price or steal the item to get it back, but in a pinch, this can provide a price point for an object that the shopkeeper would not normally be interested in.
Common uses
The item which is most commonly price-IDed is the scroll of identify, which is far cheaper than the other scrolls. In addition, magic lamps cost more than oil lamps, and enchanted armor costs more than their unenchanted versions.
Price-IDing can also be useful to identify bad items. The scroll of amnesia has a base price of 200zm, ten times as much as a scroll of identify. A potion of sickness has a base price of 50zm, a potion of hallucination 100zm, and a potion of blindness 150zm.
Spellbooks are useful to price-identify as a non-Wizard, to determine whether they are low enough difficulty level to safely read. The base price of a spellbook in zorkmids is 100 times its difficulty level (the derived sell price is 50 times its difficulty level).
Stealing powerful wands
An expensive wand (base price 500zm) is either wishing or death. In general, you should have a pet steal such an item; if you don't have a pet, both wands are well worth buying. If you have neither a pet nor the gold, either should be pretty easy to obtain: throw a tripe or food ration at a wild dog or cat, or sell junk to the shopkeeper.
One might be tempted to zap the wand (wishing for a wand of death if it's a wand of wishing) at the shopkeeper, but for early characters, this is a bad idea: the death ray might miss, which can easily lead to a quick YASD, given shopkeepers' speed and damage output. Furthermore, wishing for a wand of death from a wand of wishing is generally a waste anyways, given that by the time you really need one, you can get the one Orcus carries. If you're truly concerned about your character's ability to survive long enough to buy or steal the wand, wishing for 5000 gold pieces is a safe way to be able to do so, though it is also a waste of a wish. If you really want to kill the shopkeeper, wish for a blessed figurine of an Archon, though be aware that this has a 10% chance of backfiring.
Price tables
All prices in shops are determined by an item's base price and then adjusted based on the player's CHA (as well as other factors like race in variants beyond vanilla). All values are subject to the same pricing algorithm, so a potion with a base price of 50z will have the same set of values as a scroll or piece of armor with the same base price. As such, all base item prices can be determined using the same price tables and then compared against the possible items for that base price.
Note: due to the fact that there are some duplicated prices in how the math plays out, there is potential ambiguity in base prices if an item base price can fall into multiple price ranges (e.g. if there were potions of base price 0z and 2z it would be impossible to tell them apart aside from selling them). At current, however, most item categories avoid this so there are only a few areas where this can be confusing:
- scrolls at 60/80z
- potions, rings, and wands at 150/200z
- spellbooks at 300/400z
In the tables below, two numbers are shown in parentheses with the buying price. The first number in parentheses is the price if you are charged either the unidentified surcharge or the sucker markup. The second number is the price with both of those surcharges. For the selling price, the number in parentheses is the amount of a randomly discounted offer.
Numbers in bold are prices that leave the base price ambiguous.
Master List - Shop Prices by Player Charisma
| Base cost | Cha ≤ 5 | Cha 6–7 | Cha 8–10 | Cha 11–15 | Cha 16–17 | Cha 18 | Cha ≥ 19 | Selling price |
|---|---|---|---|---|---|---|---|---|
| 0 | 10 (12/16) | 7 (9/12) | 6 (8/10) | 5 (6/8) | 4 (5/6) | 4 (4/6) | 2 (3/4) | 0 (0) |
| 2 | 10 (12/16) | 7 (9/12) | 6 (8/10) | 5 (6/8) | 4 (5/6) | 4 (4/6) | 2 (3/4) | 1 (1) |
| 8 | 16 (20/26) | 12 (15/19) | 10 (13/17) | 8 (10/13) | 6 (8/10) | 6 (7/9) | 4 (5/6) | 4 (3) |
| 20 | 40 (52/68) | 30 (39/51) | 26 (34/45) | 20 (26/34) | 15 (20/26) | 14 (18/23) | 10 (13/17) | 10 (8) |
| 30 | 60 (80/106) | 45 (60/79) | 40 (53/70) | 30 (40/53) | 23 (30/40) | 20 (27/36) | 15 (20/26) | 15 (12) |
| 40 | 80 (106/140) | 60 (79/105) | 53 (70/93) | 40 (53/70) | 30 (40/53) | 27 (36/47) | 20 (26/35) | 20 (15) |
| 50 | 100 (132/176) | 75 (99/132) | 66 (88/117) | 50 (66/88) | 38 (50/66) | 34 (44/59) | 25 (33/44) | 25 (19) |
| 60 | 120 (160/212) | 90 (120/159) | 80 (106/141) | 60 (80/106) | 45 (60/80) | 40 (54/71) | 30 (40/53) | 30 (23) |
| 80 | 160 (212/282) | 120 (159/211) | 106 (141/188) | 80 (106/141) | 60 (80/106) | 54 (71/94) | 40 (53/70) | 40 (30) |
| 100 | 200 (266/354) | 150 (199/265) | 133 (177/236) | 100 (133/177) | 75 (100/133) | 67 (89/118) | 50 (66/88) | 50 (38) |
| 150 | 300 (400/532) | 225 (300/399) | 200 (266/354) | 150 (200/266) | 113 (150/200) | 100 (134/178) | 75 (100/133) | 75 (57) |
| 175 | 350 (466/620) | 262 (349/465) | 233 (310/413) | 175 (233/310) | 132 (175/233) | 117 (156/207) | 87 (116/155) | 87 (66) |
| 200 | 400 (532/708) | 300 (399/531) | 266 (354/472) | 200 (266/354) | 150 (200/266) | 134 (178/236) | 100 (133/177) | 100 (75) |
| 250 | 500 (666/888) | 375 (499/666) | 333 (444/592) | 250 (333/444) | 188 (250/333) | 167 (222/296) | 125 (166/222) | 125 (94) |
| 300 | 600 (800/1066) | 450 (600/799) | 400 (533/710) | 300 (400/533) | 225 (300/400) | 200 (267/356) | 150 (200/266) | 150 (113) |
| 500 | 1000 (1332/1776) | 750 (999/1332) | 666 (888/1184) | 500 (666/888) | 375 (500/666) | 334 (444/592) | 250 (333/444) | 250 (188) |
| 600 | 1200 (1600/2133) | 900 (1200/1600) | 800 (1067/1422) | 600 (800/1067) | 450 (600/800) | 400 (533/711) | 300 (400/533) | 300 (225) |
| 700 | 1400 (1867/2489) | 1050 (1400/1867) | 933 (1244/1659) | 700 (933/1244) | 525 (700/933) | 467 (622/830) | 350 (467/622) | 350 (263) |
| Base cost | Cha ≤ 5 | Cha 6–7 | Cha 8–10 | Cha 11–15 | Cha 16–17 | Cha 18 | Cha ≥ 19 | Selling price |
|---|---|---|---|---|---|---|---|---|
| 0 | 10 (13/18) | 8 (10/13) | 7 (9/12) | 5 (7/9) | 4 (5/7) | 3 (4/6) | 3 (3/4) | 0 (0) |
| 2 | 10 (13/18) | 8 (10/13) | 7 (9/12) | 5 (7/9) | 4 (5/7) | 3 (4/6) | 3 (3/4) | 1 (1) |
| 8 | 16 (21/28) | 12 (16/21) | 11 (14/19) | 8 (11/14) | 6 (8/11) | 5 (7/9) | 4 (5/7) | 4 (3) |
| 20 | 40 (53/71) | 30 (40/53) | 27 (36/47) | 20 (27/36) | 15 (20/27) | 13 (18/24) | 10 (13/18) | 10 (8) |
| 30 | 60 (80/107) | 45 (60/80) | 40 (53/71) | 30 (40/53) | 23 (30/40) | 20 (27/36) | 15 (20/27) | 15 (11) |
| 40 | 80 (107/142) | 60 (80/107) | 53 (71/95) | 40 (53/71) | 30 (40/53) | 27 (36/47) | 20 (27/36) | 20 (15) |
| 50 | 100 (133/178) | 75 (100/133) | 67 (89/119) | 50 (67/89) | 38 (50/67) | 33 (44/59) | 25 (33/44) | 25 (19) |
| 60 | 120 (160/213) | 90 (120/160) | 80 (107/142) | 60 (80/107) | 45 (60/80) | 40 (53/71) | 30 (40/53) | 30 (23) |
| 80 | 160 (213/284) | 120 (160/213) | 107 (142/190) | 80 (107/142) | 60 (80/107) | 53 (71/95) | 40 (53/71) | 40 (30) |
| 100 | 200 (267/356) | 150 (200/267) | 133 (178/237) | 100 (133/178) | 75 (100/133) | 67 (89/119) | 50 (67/89) | 50 (38) |
| 150 | 300 (400/533) | 225 (300/400) | 200 (267/356) | 150 (200/267) | 113 (150/200) | 100 (133/178) | 75 (100/133) | 75 (56) |
| 175 | 350 (467/622) | 263 (350/467) | 233 (311/415) | 175 (233/311) | 131 (175/233) | 117 (156/207) | 88 (117/156) | 88 (66) |
| 200 | 400 (533/711) | 300 (400/533) | 267 (356/474) | 200 (267/356) | 150 (200/267) | 133 (178/237) | 100 (133/178) | 100 (75) |
| 250 | 500 (667/889) | 375 (500/667) | 333 (444/593) | 250 (333/444) | 188 (250/333) | 167 (222/296) | 125 (167/222) | 125 (94) |
| 300 | 600 (800/1067) | 450 (600/800) | 400 (533/711) | 300 (400/533) | 225 (300/400) | 200 (267/356) | 150 (200/267) | 150 (113) |
| 400 | 800 (1067/1422) | 600 (800/1067) | 533 (711/948) | 400 (533/711) | 300 (400/533) | 267 (356/474) | 200 (267/356) | 200 (150) |
| 500 | 1000 (1333/1778) | 750 (1000/1333) | 667 (889/1185) | 500 (667/889) | 375 (500/667) | 333 (444/593) | 250 (333/444) | 250 (188) |
| 600 | 1200 (1600/2133) | 900 (1200/1600) | 800 (1067/1422) | 600 (800/1067) | 450 (600/800) | 400 (533/711) | 300 (400/533) | 300 (225) |
| 700 | 1400 (1867/2489) | 1050 (1400/1867) | 933 (1244/1659) | 700 (933/1244) | 525 (700/933) | 467 (622/830) | 350 (467/622) | 350 (263) |
Magical armor
Positive enchantment on a piece of armor increases the base price by 10zm per point of enchantment. In theory, a +2 or better pair of fumble boots might be confused for one of the much more useful 50zm boots, but the probability for positive enchantments on harmful items is too low to be worth worrying about.
| Base cost | Sell price | Helm | Cloaks | Gloves | Boots |
|---|---|---|---|---|---|
| 2 | 1 (1) | mummy wrapping | |||
| 8 | 4 (3) | leather gloves | elven boots, kicking boots | ||
| 10 | 5 (4) | helmet | |||
| 30 | 15 (11) | fumble boots, levitation boots | |||
| 40 | 20 (15) | leather, orcish ("coarse mantelet") | |||
| 50 | 25 (19) | brilliance, opposite alignment, telepathy | alchemy smock ("apron"), displacement, dwarvish ("hooded cloak"), oilskin ("slippery cloak"), protection, robe ("robe") | dexterity, fumbling, power | jumping boots, speed boots, water walking boots |
| 60 | 30 (23) | elven ("faded pall"), invisibility, magic resistance |
Helms
All magical randomized helms (brilliance, opposite alignment, and telepathy) cost 50zm; the helmet costs 10zm.
Cloaks
The cloaks of displacement and protection both cost 50zm, and are the only ones at that price with a randomized appearance. If a cloak costs 60zm and has a randomized appearance, then it is either invisibility, magic resistance, or a +1 cloak of the first two types.
Gloves
All magical gloves (dexterity, fumbling, and power) cost 50zm; leather gloves cost 8zm.
Boots
Fumble boots and levitation boots are both 30zm, but are of different weights. They are often cursed.
Speed boots, jumping boots, and water walking boots are all priced at 50zm. They are easily identified once worn: speed boots auto-identify if you are not already very fast (potion of speed or haste self spell), jumping boots allow you to jump, and boots of water walking are otherwise mundane.
Elven boots cause you to "walk very quietly" and self-identify if you are not already stealthy. Kicking boots are made of metal, and consequently add to spell failure percentage.
Accessories
Amulets
All amulets have a weight of 20, are made of iron, and have a base price of 150 zorkmids, with three exceptions: The Eye of the Aethiopica has a base price of 4000 zorkmids, the Amulet of Yendor is made of mithril and has a base price of 30000 zorkmids, and cheap plastic imitations of the Amulet of Yendor are made of plastic and are worth 0 zorkmids.
Rings
| Base cost | Selling price | Ring types |
|---|---|---|
| 100 | 50 (38) | adornment, hunger*, protection, protection from shape changers, stealth, sustain ability, warning |
| 150 | 75 (57) | aggravate monster*, cold resistance, gain constitution, gain strength, increase accuracy, increase damage, invisibility, poison resistance, see invisible, shock resistance |
| 200 | 100 (75) | fire resistance, free action, levitation, regeneration, searching, slow digestion, teleportation* |
| 300 | 150 (113) | conflict, polymorph*, polymorph control, teleport control |
An asterisk (*) indicates that this ring is generated cursed 90% of the time.
The most useful rings to price-identify are the most expensive and most powerful rings: the 200zm and 300zm rings.
All 200zm rings, provided they are non-cursed, are useful and safe to wear. These include the rings of free action, slow digestion, searching, levitation, regeneration, fire resistance and teleportation. It is important to only wear rings from this group known to be non-cursed, since uncontrolled teleportitis or a cursed ring of levitation may be hazardous. The ring of levitation auto-identifies when worn; the effects of the other 200zm rings, with the probable exceptions of fire resistance or teleportation if you already have the intrinsics, will eventually become clear if you wear the rings. The ring of regeneration can also be quickly tested for: wear it, throw a (preferably non-breakable) object up to lose a few hit points, and watch if you re-gain them every turn.
The 300zm rings include the rings of conflict, teleport control, polymorph, and polymorph control. The first two are among the most coveted items in the game and are frequent wish targets, however the ring of polymorph means that 300zm rings are not generally safe to wear. Conflict can still be easily identified by wearing it for a turn or two around a peaceful monster (remember that a shopkeeper, aligned priest, or your Quest leader are probably not wise choices). Teleport control can also be identified by putting on the ring and triggering a teleport (via trap, scroll, wand, etc.) If your 300zm ring is neither of these, do not wear it; use a scroll, spell, a handy sink or a source of enlightenment to reliably identify the other 300zm rings. Alternately, a riskier method of determining whether a 300zm ring is safe to wear is simply to wear it for a few hundred turns without wearing a shirt, cloak, or body armor (or wearing junk armor); that way, if you polymorph you will not break your useful armor.
Consumable Items
(*) - sell prices are listed according to Nethack 3.6.0 and later - earlier versions may be off by a few zorkmids due to rounding.
Scrolls
If the scroll costs 20zm, 50zm, or 60zm, it is uniquely identified. Identification of more expensive scrolls usually involves using the spell or scroll of identify. If you choose to read an unknown scroll, you should always make sure the unknown scroll is not cursed, and never read it while confused.
If the scroll costs 80zm, it is either enchant armor or remove curse. Both are harmless, unless the scroll is cursed or you are confused. Before reading, you may want to bless the scroll, wear only armor you want to enchant, and hold all the cursed items you want to uncurse.
Among scrolls that cost 100zm, there are two dangerous scrolls, fire and destroy armor. Before reading, to protect from ill effects of the former, put all your scrolls, potions, and spellbooks into a container, or into a closet, or leave them on a different level, or just leave them at least 2 squares from you (but then you should beware of the danger of them being picked up by a monster if you encountered a scroll of teleportation. To protect from ill effects of both scrolls, make sure all your armor, except a shirt covered by a body armor or cloak, and body armor covered by a cloak, is something you can afford to lose.
If the scroll costs 200zm, the only dangerous scroll is amnesia, but it is really bad, and you cannot protect from it. Unless you have identified the scroll of amnesia, don't read an unkown 200-zorkmid scroll. Identify it by other means.
If the scroll costs 300zm, the only dangerous scroll is punishment. In Nethack 3.4.3, there is a simple way to get rid of the heavy iron ball, involving a pit and a boulder, but since 3.6.0, it doesn't work. Don't read the scroll unless you have non-cursed scroll of remove curse or a wand of opening, or unless you know and can cast a knock spell, or can polymorph into a nymph or metallivore. Alternatively, you can bless the scroll and then read it. Blessed scrolls of punishment are harmless, and blessed scrolls of genocide and charging are more powerful than uncursed scrolls. Finally, if you are absolutely sure it is not a scroll of genocide, you can read it while confused. Beware! Reading a scroll of genocide while confused would genocide your own race, thus killing you, even if you are wearing an amulet of life saving.
Potions
If the potion is water (clear potion), price gives some information about its beatitude. If the price is 0, the water is uncursed; otherwise it is either holy or unholy water.
If the price is 250zm, you can ensure it is not cursed, then try to apply it. If it is a potion of oil, it will be lit. Do not do this when the potion is owned by a shop, or you will be forced to pay for the potion and will be charged Yendorian Fuel Tax.
Otherwise, price identification of a potion usually includes quaffing it. See Potion § Price identification then quaffing for more information.
Wands
It is usually better to engrave ID wands to determine their identity, however base 175zm wands found in shops are all useful (cold, sleep, fire, or lightning), price identification can distinguish a wand of sleep from a wand of death without using another charge, any wand that makes engravings vanish that has a base price of 150zm is a wand of make invisible, and any wand that gives no message when engraved with a base price of 100zm is a wand of nothing.
Spellbooks
Determining the level of a spellbook can be very useful for spellcasters, since it can eliminate books that are much too high level to be read, and reveal books that should be easy to read. However, knowing the level of a spellbook is not very helpful unless the book is also BUC identified.
Variants
SLASH'EM
Price identification is more complicated in SLASH'EM, partly due to the addition of several new items, and partly due to discriminatory role-based markups:
- Barbarians pay triple the base price ("Barbarians are gullible")
- Rogues pay double the base price ("Rogues are untrustworthy")
- Samurai pay double the base price ("Samurai are from out of town")
Furthermore, in the black market, magical items cost 50 times the base price, and nonmagical items cost 25 times the base price. These markups are applied in this order, after any relevant unidentified item surcharge, sucker markup, and charisma modifier.
Relevant parts of above tables that change are given in the table below.
| Category | Base cost | Cha ≤ 5 | Cha 6–7 | Cha 8–10 | Cha 11–15 | Cha 16–17 | Cha 18 | Cha ≥ 19 | Selling price | Item types |
|---|---|---|---|---|---|---|---|---|---|---|
| Rings | 100 | 200 (266/354) | 150 (199/265) | 133 (177/236) | 100 (133/177) | 75 (100/133) | 67 (89/118) | 50 (66/88) | 50 (38) | adornment, hunger*, mood, protection, protection from shape changers, sleeping* stealth, sustain ability, warning |
| 150 | 300 (400/532) | 225 (300/399) | 200 (266/354) | 150 (200/266) | 113 (150/200) | 100 (134/178) | 75 (100/133) | 75 (57) | aggravate monster*, cold resistance, gain constitution, gain dexterity, gain intelligence, gain strength, gain wisdom, increase accuracy, increase damage, invisibility, poison resistance, see invisible, shock resistance | |
| Wands | 150 | 300 (400/532) | 225 (300/399) | 200 (266/354) | 150 (200/266) | 113 (150/200) | 100 (134/178) | 75 (100/133) | 75 (57) | digging, enlightenment, healing, locking, magic missile, make invisible, opening, probing, secret door detection, slow monster, speed monster, striking, undead turning |
| 175 | 350 (466/620) | 262 (349/465) | 233 (310/413) | 175 (233/310) | 132 (175/233) | 117 (156/207) | 87 (116/155) | 87 (66) | cold, draining, fire, lightning, sleep | |
| 200 | 400 (532/708) | 300 (399/531) | 266 (354/472) | 200 (266/354) | 150 (200/266) | 134 (178/236) | 100 (133/177) | 100 (75) | cancellation, create monster, fear, polymorph, teleportation | |
| 300 | 600 (800/1066) | 450 (600/799) | 400 (533/710) | 300 (400/533) | 225 (300/400) | 200 (267/356) | 150 (200/266) | 150 (113) | create horde, extra healing, fireball | |
| Potions | 50 | 100 (132/176) | 75 (99/132) | 66 (88/117) | 50 (66/88) | 38 (50/66) | 34 (44/59) | 25 (33/44) | 25 (19) | blood ("blood-red potion"), booze, fruit juice, see invisible, sickness |
| 100 | 200 (266/354) | 150 (199/265) | 133 (177/236) | 100 (133/177) | 75 (100/133) | 67 (89/118) | 50 (66/88) | 50 (38) | amnesia ("sparkling potion"), clairvoyance, confusion, extra healing, hallucination, healing, holy water ("blessed clear potion"), unholy water ("cursed clear potion"), restore ability, sleeping | |
| 150 | 300 (400/532) | 225 (300/399) | 200 (266/354) | 150 (200/266) | 113 (150/200) | 100 (134/178) | 75 (100/133) | 75 (57) | blindness, ESP, gain energy, invisibility, monster detection, object detection | |
| 300 | 600 (800/1066) | 450 (600/799) | 400 (533/710) | 300 (400/533) | 225 (300/400) | 200 (267/356) | 150 (200/266) | 150 (113) | gain ability, gain level, invulnerability, paralysis | |
| 350 | 700 (932/1242) | 525 (699/931) | 466 (621/828) | 350 (466/621) | 263 (350/466) | 234 (311/414) | 175 (233/310) | 175 (132) | vampire blood ("blood-red potion") | |
| Robes | 25 | 50 (66/88) | 37 (49/66) | 33 (44/58) | 25 (33/44) | 19 (25/33) | 17 (22/30) | 12 (16/22) | 12 (9) | robe |
| 50 | 100 (132/176) | 75 (99/132) | 66 (88/117) | 50 (66/88) | 38 (50/66) | 34 (44/59) | 25 (33/44) | 25 (19) | power, protection, weakness | |
| Cloaks | 40 | 80 (106/140) | 60 (79/105) | 53 (70/93) | 40 (53/70) | 30 (40/53) | 27 (36/47) | 20 (26/35) | 20 (15) | leather, orcish ("coarse mantelet"), poisonous |
| 60 | 120 (160/212) | 90 (120/159) | 80 (106/141) | 60 (80/106) | 45 (60/80) | 40 (54/71) | 30 (40/53) | 30 (23) | elven ("faded pall"), invisibility, lab coat ("white coat"), magic resistance |
UnNetHack
In UnNetHack, the random 25% reduction of selling price applied to the whole shop. That means if an item sells 3⁄8 of its base price, that shopkeeper will pay 25% less for everything you sell there.
GruntHack
In GruntHack, shopkeepers that hate your race increase the buy price of every item by 33% (multiplying by 4⁄3), and cut the sell price of every item by 66% (dividing by 3).
Also, the base price of any item is increased if it has object properties: by 100 for one property, 500 for two properties, 1000 for three properties, and so on.
Slash'EM Extended
In Slash'EM Extended, price identification is not possible. All items of the same base type will be the same price.
FIQHack
In FIQHack, all items in shops are automatically identified for tourists. This includes items that you sell to shopkeepers.
History
Before NetHack 3.6.1, all shopkeepers had a 25% chance of lowering their prices each time you offer to sell unidentified items other than gems, instead of 25% of shopkeepers always doing it.
References
External links
- Clippy is a handy tool to identify an item.
- Determine Objects by their Price works similar. It is more accurate because takes some more corner cases into account, but less broad because it works for the magical items ? ! / = + only.
- The consolidated item tables lists the base price of every single item.
- NetHack Shopping Spoiler
- DizzyPrice is an open source price identification tool updated to the new rounding method for NetHack 3.6.0.
