CowBoom offers the used Microsoft Xbox 360 E 250GB Console, model no. M9V-00001, for $109.99. Coupon code "x36072315" cuts it to $79.99. With free shipping, that's $200 under the lowest total price we could find for a new model, although we saw a used one for $10 less last week. It features 250GB internal memory, WiFi, and a wireless controller.
Note: No warranty information is provided. It may be missing some non-critical components or parts and may have cosmetic imperfections.