Based on my experiences at Gamestop, I'd wager this could be a pretty big deal. The bulk of our trade-in customers were "casual" gamers, and bought most of their games not from us, but from Walmart. They'd only come to us because we were the only place in town they could easily dump their old titles for some money back. If Walmart does this right, they could cut a huge chunk of out Gamestop's business, and I'm sure make a large profit for themselves.