Massdrop offers the AKG x Massdrop K7xx First Edition Headphones for $199.99 with free shipping. That's $450 under list price and the lowest total price we could find. (For further comparison, it's $199 under similar AKG headphones.) Built on the design of the AKG K702 65th Anniversary Edition Headphones, these individually-numbered open-back headphones feature a frequency response range of 10Hz to 39.8kHz, 2-layer diaphragms, detachable cable, leather headband, memory foam velour earpads, and rated impedance of 62 ohms. Deal ends December 1.
Note that they may not arrive in time for Christmas.