Amazon offers the Corsair Vengeance K65 Mechanical Gaming Keyboard in Gray, model no. CH-9000040-NA, for $69.99. Coupon code "TWITCHCON20" drops it to $55.99. With free shipping, that's $4 under our August mention and the lowest total price we've seen for this keyboard. (It's a current low by $14.) It features a short-body design, aluminum chassis, Cherry MX red switches, and 100% anti-ghosting with full key rollover on USB. Deal ends October 7.
Note: This item is temporarily out of stock, but can be ordered at this price. Amazon will deliver it when it's available.