Grab Wireless USA via eBay offers the OEM Motorola S10-HD Stereo Bluetooth Headphones, model no. 89468N, for $36.49 with free shipping. Although that's a buck more than our May mention, it's still the lowest total price we could find today by $5. These wireless headphones feature compatibility with most Bluetooth devices, up to 9 hours of talk time, up to 8 hours of music playback, and include a microUSB cable for charging.
Note: This item is new, although it ships in bulk packaging.