Beach Camera via eBay offers the Sennheiser PXC 310-BT Collapsible Noise Cancelling Bluetooth Headphones for $186.99 with free shipping. That's $3 under our mention from March and the lowest total price we could find now by $23. These over-the-ear circumaural stereo headphones feature a 15Hz to 22kHz frequency response, single-sided cable, and more.