Gooloo via Amazon offers Prime members its Gooloo Stereo Bluetooth Wireless Speaker in Black, model no. 6801781, for $34.99. Coupon code "JQHPJSRD" drops it to $27.29. Plus, Prime members bag free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $7.27.) That's $83 off list and the lowest total price we could find. It features Bluetooth 4.1, up to nine hours of playback, and includes a micro USB charging cable.