BuyDig offers the Audio-Technica Professional Studio Monitor Headphones, model no. ATH-M30x, for $69. Coupon code "GO2CLASS" cuts it to $49. With free shipping, that's a buck under our May mention and the lowest total price we've seen, and it's the lowest total price we could find by $20. They a feature 15Hz to 22kHz frequency response, 40mm drivers with neodymium magnets, 96 dB sensitivity, and collapsible design.