For its members only, Sonic Sense Pro Audio offers the Beyerdynamic T1 Tesla Over-Ear Headphones for $767.95 with free shipping. (Not a member? It's free to sign-up.) That's the lowest total price we could find by $176. Features include velour earpads, a leather headband pad, 5Hz to 50kHz frequency response, 600 ohms impedance, and 3.5mm gold-plated jack.