Could be worse. Have you played the Arkham Horror (the older edition) board game? If you want to buy things from a shop, the shop will offer you three randomly selected items, and you must buy one and only one. You’re not allowed to buy two or three, even if you could afford them. You’re not allowed to not buy anything, unless you can’t afford even the cheapest item.
Funcom, take notes. You could get more money out of people if you don’t let them leave the Bazaar page until they’ve bought something.