BuyDig via eBay offers the Audio-Technica SonicFuel On-Ear Headphones, model no. ATH-OX7AMP, for $99.99 with free shipping. That's the lowest total price we could find by $79. They feature a built-in high-output amplifier, two detachable cables, 40mm drivers, and 9Hz to 28kHz frequency response range. Deal ends June 13.