newegg offers the Scosche boomSTREAM Mini Bluetooth Media Speaker in Silver, model no. BTSPK1SR, for an in-cart price of $29.95 with free shipping. That's the lowest total price we could find by $3, although most merchants charge $40 or more. It features 3.5mm auxiliary input, a rechargeable battery, Bluetooth 2.1, and up to seven hours of playback per charge.