i think it's hilarious when people complain about used game prices. they wouldn't charge that if people didn't buy them at that price if you can get a game for 60$, or a game for 55$, very few people pick the 60$ option unless they want to support the developers specifically. of course, those people preorder through amazon and get direct shipping for free or something like that.
also, since people who buy a lot of games through them use their little powerup card thingie, they get an additional percentage off the cost of the game. so, that 55$ brand new game becomes 50$, or 45$, which is a pretty decent price for a new game that won't see a price drop for a while.