Flirc Inc. via Amazon offers Prime members the FLIRC USB Dongle for Media Centre / Raspberry Pi / XBMC, model no. 100013, for $17.95 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it costs $8.) That's the lowest total price we could find by $12. It works with any media center application that supports a keyboard.