Babies "R" Us via eBay offers the Nintendo 3DS XL Mario Kart 7 Handheld Game System in Blue/Black for $169.99 with free shipping. That's the lowest total price we could find by $30, although we saw it for $10 less a week ago. Sales tax is added where applicable.

It comes with Mario Kart 7 pre-installed and features two LCDs (one 320x240 touchscreen and one normal 800x240) which display 3D visuals without the need for 3D glasses. It also features a 3D Depth Slider, built-in motion and gyroscope sensors, Circle Pad (analog control), 3D camera, 4GB SD memory card, and more.

Orders placed by December 19 at 12 pm ET are guaranteed to arrive by Christmas.