Best Buy via eBay offers the Braven Portable Bluetooth Water-Resistant Speaker in Gray/Red, model no. BRV1GRB, for $49.99 with free shipping. That's the lowest price we could find by $16, although we saw it for $2 less during Black Friday week. It features a 70mm passive subwoofer, 1,400mAh battery, shock and water resistance, wireless range of 33 feet, and phone charging via a USB port.