Amazon offers its Prime members the Plantronics GameCom 367 Closed-Ear Gaming Headset for $21.99 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $8.82.) That's the lowest total price we could find by $3. Features include a noise-canceling microphone, in-line volume and mute controls, 50mm stereo speakers, and more.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months.