Gamestop trade in question?

I seriously doubt it. PGR was a launch game, and they won't give you more than $8-10 for it, despite it being unopened. Even used, Fight Night will still run almost $30. The value on trade-ins is severely disproportionate to what they will turn around and sell it for. You can still trade it in and pay the difference, but they won't trade you straight up.