Newegg offers the refurbished Corsair Vengeance 2100 Wireless Gaming Headset, model no. CA-9011125-NA, for $74.99. Coupon code "EMCAXKW27" cuts it to $52.49. With free shipping, that's $33 under the the lowest total price we could find for a new unit. Features include 7.1 channel, 2.4GHz wireless audio with a range of 40 feet, 50mm drivers for enhanced bass response, noise-cancellation, and up to 10 hours of battery life. Deal ends September 21.

A 90-day warranty applies, but it's unclear who provides it.