[quote name='Koggit']...wait, so a guy traded his Xbox 360 for $110 credit at Gamestop toward a PS3, then traded the PS3 to you still with the receipt for an Xbox 360?[/quote]
Yeah, I didn't understand that story either.
The trade-in value of 360 can vary some depending on what type of controller and cords you have to go with it. Also, if you're in one of the right areas, there are some $30 bonus on system trade-in coupons around the Video Game Deals forum, good through 8/31.