Max Out LLC via Amazon offers Prime members the TekNmotion Intruder Gaming Headset
, model no. TM-INT100A, for $9.61
with free shipping
. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $9.06.) That's the best deal we could find for this discontinued headset. (For further comparison, a couple eBay sellers currently offer used units, with prices starting at $28.) It includes two detachable microphones (designed for gaming and mobile use) and can be used with computers and mobile devices. It features 40mm drivers, a 20Hz to 20kHz frequency response, and a carrying bag.