How much money does everyone think I can get for my Xbox 360, preferably at Gamestop. I also have many games to give them as well. Some games I have are NBA 2K8, MLB 2K8, Madden 08, NHL 2K8, Nascar 09, Halo 3, and many other sports games. So how much do you think I could get for all this? I want to buy a PS3 with the money so I hope I get enough to buy the PS3. Thanks In Advance!