Gemini Doctor via Amazon offers Prime members this Sades BPower Stereo Gaming Headset
, model no. SA-739, for $22.99. Coupon code "7TYH9GGQ" drops it to $16.09
. Plus, Prime members bag free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $8.64.) That's $20 off list and the lowest total price we could find. It features a flexible headband, 20Hz to 20kHz frequency response, and one 3.5mm cable.