How do you convince gamestop to give you more money for your games?

i want to sell my psp games. but i know they might rip me off. so i wanna c how i can make them give me more.

or else what other store can i sell my games toHow do you convince gamestop to give you more money for your games?
Haha...they won't change the amount of store credit. They want to earn money.How do you convince gamestop to give you more money for your games?
They wont give more because they will sell it for more.



Try ebay.