The only reason that PS2 continued to sell the way it did, and thus why Sony kept it on shelves at a cheap price, is because the PS3 was selling awfully for it's first couple of years. Sony has no intention, I would think, of allowing this to happen, if they can help it, with PS4. So I don't think there's any chance that PS3 sells for any longer than through perhaps 2014. And certainly not at huge numbers.