Yeah, I'm sure it's considerable. That's the exact same reason why milk and eggs are always in the very back of the store. Also, when I worked at Circuit City, the cost to the store for a game was about $52 so that made actual profit about $8 on a $60 game. This isn't awful but Gamestop gives $30 trade in "credit" for a game and then sells it for $55 which is a much better profit and on top of that they're only giving away credit so it's even better for them. It's why they've been so successful where other game stores have failed.