I really think trying to quash the secondary market for games is going to end up costing them more new sales than used games ever could have. If someone can buy a brand new AAA title and get at least a portion of that money back then they might be willing to take more of a chance on a given game and go ahead and buy it, knowing that if they end up not liking it they can recoup some of their money. Eliminate this "insurance policy" as it were, and gamers are going to be much more fickle when it comes to how they spend their money. It just ends up with people buying fewer and fewer new games than before. Do you really think half the shovelware that gets released would even be bought by one person if gamers were unable to foist such garbage onto some other sucker?