TigerDirect offers the Premier Bluetooth Wireless Mono Headset, model no. P-BT3, for $19.99. This $19 mail-in rebate cuts it to 99 cents. With around $4 for shipping (select "Econo" during checkout), that's the lowest total price we could find by $20. It features a 20Hz to 20kHz frequency response. Rebate ends May 15.