Best Buy via eBay offers the Logitech G710+ USB Mechanical Gaming Keyboard, model no. 920-003887, for $79.99 with free shipping. (
Amazon offers it for the same price.) That's $2 under our mention from June and tied as the best price we've seen for a new unit. (It's also a current price low by $10.) It features six programmable G-keys, adjustable backlighting, and a USB port.