Staples offers the Logitech MK520 Wireless Keyboard / Mouse Combo, model no. 920-002553, for $29.99 with free shipping. (
Amazon has it for the same price with free shipping for Prime members.) That's tied with our February mention and the lowest price we could find now by $5. It features Logitech incurve keys, laser mouse, battery life of up to three years for the keyboard and one year for the mouse, unifying receiver, one-touch media controls, and adjustable tilt legs.