Almost anything you trade in at EB until the release day gets bumped up to $10 each. It only works with PS2, GC, and XB games, and there is an exclusion list, but the list is pretty short, and even if you only have three games, that still knocks the final price down to $20.
You do have to do it on a pre-order, so the last day for it is Nov 8.
Edit: Here's the list of excluded games
Thanks for that bit of information. I went to the old Gamestop that I used to work at and they were going to give me like $22 max for MechAssault, Hunter: Reckoning, and TimeSplitters 2. That inlcuded the extra 20% or something that they tacked on for each game. I left and went to EBGames and got the $30 for them there. Not bad considering they would of only been $8 total if traded in normally. I'll take a 22 buck gain. :mrgreen: