Also today only, Price Plunge offers this eXo Xciter Bluetooth Wireless Surface Speaker, model no. EXB21, for $27.99 plus $4.99 for shipping. That's the lowest total price we could find by $10. As with the above mention, this device attaches to most surfaces to turns everyday objects into a wireless sound system. It features Bluetooth connectivity, USB connection, and 3.5mm jack.