Today I traded in a game I knew did not work so I could turn around and re-purchase that same game with store credit

[Fusioncode]

I once bought Dead Rising 2 from Gamestop, came home to play it, and saw there was no disk in the box. I went back to Gamestop and asked for another copy, but they were all sold out. So they let me get another $60 game as a replacement. When I came home to play my new game, I realized that the Dead Rising 2 disk was in my PS3 the whole time, I must have put it in there and forgot about it. I ended up keeping both games.