Dell Small Business offers the Logitech MK520 Wireless Combo Keyboard and Mouse Combo, model no. 920-002553, for $29.99 with free shipping. (Best Buy via eBay charges the same.) That's tied with our expired mention from two days ago and the lowest total price we could find by $4. It features 1-touch media buttons, 2.4GHz wireless connectivity, and a battery life of up to three years for the keyboard and one year for the mouse.