1SaleADay via newegg offers the refurbished Turtle Beach Ear Force X42 Wireless Headset for Xbox 360, model no. TBS-2270-01, for $67.49 with free shipping. That's $52 under the lowest total price we could find for a new unit. Features include a 2.4/5GHz dual-band WiFi connection, Dolby surround sound, 50mm speakers, frequency response of 20Hz to 20kHz, microphone, and more. It requires two AAA batteries (included).

It's unclear whether a warranty is included.