Goldlantern G-Lux Bluetooth Headset for $9.99 after Rebate, Shipped Free!
 

This is the cheapest bluetooth headset with good reviews that I have ever seen. In fact, it got better reviews than some more expensive name brand headsets. Go figure. Apparently, it has really good battery life, decent enough sound, and it's pretty comfy. Plus, it's cheap! You don't have to lose too much sleep over it if it gets stolen or misplaced. GOLDLANTERN G-LUX BLUETOOTH HEADSET SALE