Adorama via eBay offers the LG Electronics Music Flow P7 Portable Bluetooth Speaker, model no. NP7550, for $43 with free shipping. That's $7 under our March mention and the lowest total price we've seen. (It's the best now by $7.) This 20-watt speaker connects with up to three devices at once and features a rechargeable Li-ion battery, up to 9 hours of playback time per charge, and SoundSync technology (to receive TV audio in another room).