Recettear

Recettear is about taking care of an item shop and making sure you have enough items for your shop. You'll often have to go off to explore dungeons to gather your items. You can recruit adventurers to aid you in your journey into these dungeons.
Has anyone heard of this or played this game before? I recently discovered this in english but it was only a demo. It is a doujin game. You can find the demo here.

This game looks so silly that it interests me. The fact that this game makes you go into a dungeon caught me by surprise! I must cast this demo sometime.