Sonic Electronix offers the Beyerdynamic Custom One Pro Plus Closed-Back Headphones in Black or White for $199. Coupon code "BLUE20" drops it to $159.20. With free shipping, that's the lowest total price we could find by $40. They feature a frequency response of 5Hz to 35kHz, 16-Ohm impedance, in-line microphone and remote, and leatherette ear cushions. They come with 16 PVC design covers, a detachable connecting cable, and 1/4" adapter.