Massdrop offers the AKG Pro Studio Headphones, model no. K553, for $139.99 with free shipping. That's the lowest total price we could find by $59. (Other merchants are only offering preorders at this time and don't expect to ship the headphones until May; these are estimated to ship in mid April). They feature a frequency response of 12Hz to 28kHz, closed-back design, foam ear pads, and 10-foot straight cable. Deal ends April 2.