Toys "R" Us offers the Nintendo Wii U 32GB Mario Kart 8 Deluxe Console Bundle for $249.99 with free shipping. That's $20 below our October mention and the lowest total price we've seen. (It's a current low by $50.) The bundle includes the 32GB console, a Wii U GamePad, controller charging cradle, Mario Kart 8, and bonus DLC (six new characters, eight new vehicles, and 16 new tracks).
Update: Amazon now offers it for the same price.