Plantronics Voyager 855 Stereo Bluetooth Headset for $31.49 shipped. Here is a screenshot for your reference. Alternatively, it is available here for $33.99 shipped. It has up to 7 hours of talk time and 160 hours of standby on a single charge. It is meant for both phone conversation and stereo music. Most places have this Bluetooth headset for over $60.
Originally posted earlier, this deal has been revised and is just a friendly reminder.