Today only. World Wide Stereo has the Koss UR20 Full Size Stereo Headphones for $25 - $10 off with coupon code DAILYDEAL [Exp 8/6] = $15 with free shipping. Features 30-20,000 Hz frequency response, 8-ft. cord and leatherette ear cushions.
NothingButSoftware has the Koss UR-20 Home Headphones for $15 with free shipping. Features a rare earth magnet driver, 16 micron mylar element, flexible headband and an 8 foot cord. Bottom Line Telecommunications also has it for a few cents more.