Newegg offers the refurbished Sennheiser Amperior DJ-Style Headphones in Silver, model no. AMPERIOR-SIL, for $99.99 with free shipping. That's $170 off list and the lowest total price we could find. They feature aluminum ear cups, neodymium magnet systems, detachable smart remote with in-line microphone, and a frequency response of 16Hz to 22kHz.
A 90-day warranty applies, but it's unclear who backs it.