Rakuten has the Microsoft Wireless Desktop 800 USB Keyboard & Mouse for $16.99 w/free shipping!
Secured wireless connection – Microsoft 2.4 GHz wireless delivers a secured and reliable connection with up to a 15-foot range. Easy-access hot keys – Quickly access Calculator, volume controls, mute, and play/pause. Microsoft Optical Technology – 1000 dpi provides responsive cursor control. Snap-in transceiver – Stows conveniently under the mouse. Optimized power management – Power management system extends battery life.