Newegg offers the refurbished Corsair K70 Vengeance Mechanical Gaming Keyboard, model no. CH-9000067-NA, for $79.99 with free shipping. That's $30 under our May mention of a new unit and $40 less than you'd pay for a new one today. It features Cherry MX Brown mechanical key switches, a detachable wrist rest, red LED backlighting with per-key programming, and USB.
A 90-day warranty applies, but it is unclear who covers it.