Sonic Electronix via eBay offers the Beyerdynamic DTX 102 iE Earbud Headphones in Red/Black, model no. 716391, for $69.99 with free shipping. That's $10 below our mention from three weeks ago and the best price we've seen. (It's also a current low by $18.). They feature a 9mm driver, 10 to 23kHz frequency response, 104 dB sensitivity, 23 Ohms impedance, and 3.9-foot cable.