Best Buy offers the Logitech G510s USB Gaming Keyboard, model no. 920-004967, for $49.99 with free shipping. That's $10 under our November mention and the lowest total price we've seen. (It's a current low by $42.) The keyboard features 18 customizable "G-Keys," six-key anti-ghosting, game mode (which disables the Windows key), 3.5mm audio output, and custom color backlighting.

Update: It's now available for in-store pickup only.