Gamestop over here is weird. I wanted to buy PoP: Warrior Within from them and got Two Thrones instead. Their prices are usually outrageous, but they sold Ikaruga for 5€, that was even before that game hit the XBLA. (regular ebay price back then: 40€+)
I hope you got the game's original packaging (i.e. the case), it's mandatory.
I hope you got the game's original packaging (i.e. the case), it's mandatory.