Gamestop can try and support the used sale setup M$ has allowed all they want. But it won't mean shit if nobody brings them games. M$ is supposedly cutting them in at 10% of the value. So suppose you bring in a $50 game, and Gamestop is getting $5 on the deal. How much $$ do you think Gamestop will cut you in on? Gamestop will be forced to hand out virtually nothing. Sure your used disc is already worthless, so $1 may look appealing, but so will simply throwing the disc in the trash.