The Digital Guy via eBay offers the Urge Basics Soundbrick Bluetooth Stereo Speaker with built-in mic in five colors (Black pictured) for $39.95 with free shipping. (Pavilion Electronics via Amazon charges the same.) That's $40 under Urge's direct list price and the lowest total price we could find. It features up to 80 hours of usage per charge, Bluetooth 2.0, and compatibility with most Bluetooth-enabled devices (including the iPad and Samsung Galaxy Tab).