Staples offers the Logitech MK520 Wireless Combo Keyboard and Mouse Set, model no. 920-002553, for $29.99. Plus, Staples Rewards members qualify for free shipping. (Not a member? It's free to sign up.) That's the lowest total price we could find by $3, although we saw a refurb for $12 less in October. 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. Deal ends March 21.