E-Auctions Express through Amazon has the Refurbished Logitech K480 Bluetooth Multi-Device Keyboard for $14.44 ($48.62 if new on Amazon)  with Free Shipping for a limited time.

The Bluetooth Multi-Device Keyboard K480 is a unique keyboard for your computer. That also works with your tablet and smartphone. The Easy-Switch dial lets you switch typing between 3 connected Bluetooth wireless devices, and you’ll find a familiar keyboard layout with shortcut keys for Windows, Mac or Chrome computers, as well as Android and iOS mobile devices.