GameStop is now going mobile when it comes to buying and selling portable iOS devices. GameStop will soon be selling iPhones, iPads and iPods as well as accepting used ones for in-store credit. The exact date for when GameStop will be doing this is unsure at the moment, but speculation is going around saying that it might be at the end of this year.
So make sure you go to GameStop to sell your five hundred dollar iPads for only twenty bucks, I wouldn't be surprised if that's how much GameStop will offer.
