Is the money in the picture above the article actually of the Money? If so it does look very accurate, and I can see why the manager was fooled. Taking it back for a cash refund was a stupid move though. I'm glad someone competent didn't get his hands on these fake bills.
For the people wondering why he would be dumb enough to go back the next day, he was trying to scam the store by buying the system with fake money and then returning it the next day to get real money. He could have done it anywhere, he just chose GameStop.
I'm more concerned with the fact he went to return it the next day? What for? Did he have a broken one and was trying to swipe it out for another or store credit? In which case, go to another store you idiot! don't go back to the same freakin' store!