BuyDig offers the Audio-Technica Audiophile Open-Air Headphones, model no. ATH-AD500X, for $74.95. Coupon code "EMATPRO" cuts the price to $64.95. With free shipping, that's the lowest total price we could find by $20. They feature 53mm drivers, a gold-plated 3.5mm connector with a 1/4" adapter, and 5Hz to 25kHz frequency response.