Emarth Tech via Amazon offers its Emarth GS4 Mechanical 87-Key Gaming Keyboard for $31.99. Coupon code "V532CA4Q" cuts it to $24.95. Plus, Prime members receive free shipping. That's a buck under last month's mention, $7 off, and the lowest price we've seen. It features 10 levels of brightness, 12 multimedia controls, and Windows key lock out option.