Shopping is a mechanic used to purchase items.
Usage
Periodically, inmates will yield a cash sack (in the Escapists 2, this will be a coin) symbol above their heads. This indicates that they are ready to do business. Press [interact] near these vendors to open up the shopping menu. Buying items require coins, the game's currency. Additionally, inmates need to have an opinion greater than 49, else, purchases will fail. Once you buy an item, that item is yours and it will no longer be on sale. If you buy every item on sale, the shop will no longer exist. Keep in mind that shops will open for a limited amount of time. Once shops close, items on sale will perish.