Emarth via Amazon offers the Emarth GS4 Mechanical 87-Key Gaming Keyboard, model no. 6454233, for $31.99. Coupon code "QESUUSDB" drops it to $25.59. (Choose "one-time purchase" to apply the coupon.) Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $9.55.) That's $2 under our October mention, $12 off list, and the lowest total price we've seen. It features blue switches, 10 levels of brightness, 12 multimedia controls, and Windows key lock out option.