Credit cloning

The strategy of credit cloning is simple:

• Move all objects in the shop to a single pile. Drop a cursed item to prevent your pet from moving on to it.
• Drop gold into the shop. The shopkeeper will give you credit for the gold.
• Let your pet steal the gold for you.
• Go to the pile and buy as much as you can from your credit.
• Sell all the recently bought items, even items that you own.
• You may need to buy and sell several times before you can exhaust your credit if you had a lot of starting credit.
• Drop the old + new gold in the shop and repeat from letting your pet steal it.

Repeat the technique till the shopkeeper has no gold (when it starts to give you credit when you try to sell the item), and you have enough credit to buy everything that you want from the shop.

The technique is very time consuming and should not be done if you don't have enough food. Thus, the easiest shop to rob this way is delicatessen.

However, In case of general shops, and ring/gem shops, one can use an identified valuable gem to get all the money of she shopkeeper. Any pet can carry a white gem. You can pile the objects of the shop if they are safe to pick up, or put a worthless cursed item on it so that you are sure that your pet will pick up the valuable gem after you sold it to the shopkeeper. This applies also to other kinds of shop, but it usually requires a stronger pet and takes much more time. (it might be handy to leave a few 100 gold pieces to at least one general store in the game as those are very useful for price identification)