Amazon offers Amazon Prime members the MEElectronics M9 Hi-Fi Sound-Isolating Headphones in Black for $9.99 with free shipping. (newegg charges the same.) That's tied with our Black Friday mention of these headphones in silver and the lowest total price we could find now by $5. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.58.) These headphones feature a 20Hz to 20kHz frequency response, 3.5mm plug, and 4-foot cord.

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. (Note that currently there's a waitlist for Amazon Mom.)