Walmart offers the Logitech MK270 Wireless Desktop Keyboard/Mouse Combo, model no. 920-004536, for $12.50. Opt for in-store pickup to dodge the $4.97 shipping charge. That's $2 under our May mention (although that deal included free shipping) and the lowest price we've seen. (It's also a current price low for a shipped combo by $7.) This mouse and keyboard set features 2.4GHz wireless connectivity, eight hot keys, and spill-resistant keyboard. It purports to have up to two years of battery life for the keyboard and one year for the mouse.