Amazon offers Prime members the Plantronics Marque 2 Ultralight Bluetooth Headset in Black, model no. M165, for $24.99 with free shipping. (Non-Prime members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $6.29.) That's the lowest total price we could find by $5. It features dual microphones, power-saving mode, voice answer or ignore, and an optional ear loop.