Seventh Continent via Amazon offers Prime members the NRGized Headphones with Microphone in four colors (Orange picture) for $10.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $5.99.) That's $39 off list and the lowest total price we could find. They feature in-line controls, 106dB sensitivity, and 20Hz to 20kHz frequency response.

Orders placed by December 22 are guaranteed to arrive in time for Christmas via Prime shipping.