The psp is getting boring and I finally decided to sell it. It takes about one and a half hour drive to get to a gamestop. So i just wanted to know around how much does gamestop pay for a used psp? I also have few other games, GTA, SOCOM, BURNOUT, SYPHON FILTER, RIDGE RACER, PURSUIT FORCE, and also a 1GB SanDisk Gaming memory stick. How much do they pay for those stuffs?