Massdrop offers the AKG M220 Semi-Open Over-Ear Studio Headphones in White for $49.99 plus $8.25 for shipping. That's $8 under our mention from last December and the lowest total price we've seen. (It's also the best deal we could find now by $22.) They feature a 15Hz to 25kHz frequency response, 55-ohms impedance, 91dB/mW sensitivity, 9.8-foot detachable cable, and 1/4" adapter. Deal ends October 17.