DBROTH via eBay continues to offer the Zelher Bluetooth Headset, model no. P20, for $19.99 with free shipping. That's tied with our mention from three weeks ago as the lowest total price we've seen. (It is a current price low by $55.) Features include dual simultaneous connections, 21-hour talk time, up to 400-hour standby time, 30-foot range, and more.