Uncharted 2 trade in for Borderlands?

Ok, I don't want to hear any opinions U2 is not my type of game Borderlands is can I trade U2 for Borderlands at gamestop for no extra charge just hand off???? Because I wanna trade it in because it was a christmas present but isn't my type! Please I could use help with this! Would be great if someone who works at gamestop knew and answered! Thank you!