If you've been following Nintendo and Sony as they prepare for their new console releases, you're probably expecting the flood of scalpers and resellers who will try to capitalize on the limited supply. It has happened with the release of many consoles, including the Xbox 360 and PlayStation 2. eBay is looking to do something about it, both to protect their own buyers and curb false sales. They have a set of guidelines for anyone selling a pre-order console. It's limited to one sale per person, and they must meet certain approval ratings.
Whether or not it actually protects someone is up in the air, since many scalpers will often prowl a store and try to sell the consoles out of the back of a truck. Considering the number of people ripped off on fake sales during the release of the Xbox 360, it's probably better just to wait.