Buy.com has the Xpal 88043 Harry Ii Compact, Rechargeable Portable Power for $19.99 with free shipping.
--Supports Bluetooth? cell phones, smart phones, MP3s, Media Player?, digital cameras & gaming; Rechargeable over 500x
--Features Full Charge Auto Shut Off & a smart LED display to show battery life; Built-in Short Circuit, Over-Charge & Temperature Protection