Shops

With Advanced Trade and Carpentry 3, players can set up shops where goods are made available for purchase 'vending-machine style' using exchange rates pre-configured by the shop owner. These shops use the Small Center and Small Corner structures, which hold inventory and payments for purchases. Carpentry 4 allows building larger shop shelves, using Large Center and Large Corner structures.

https://atitd.wiki/tale8/Maps/Shop_Locations