If you are not fussy about new vs. used try Gamestop. They warranty the games for thirty days after purchase and might extend that for the christmas season. They have a special right now for buy two get one free. Since the games are discounted at around 25% you save two ways. Some of the newer/more popular games are available used. When I was there I saw Mario Kart, Mario Party 8 and more available used. And keep checking back as the used stock changes daily (sometimes hourly).