Ebay offers Refurbished Sennheiser HD 600 Audiophile Hi-Res Dynamic Headphones for $279.95 (Reg $399.95) with free shipping.

Product Description:
The Sennheiser HD 600 Headphones feature an open circumaural design, aluminum voice coils and optimized magnets for producing clean stereo sound. These black headphones offer a frequency response of 12 Hz to 40,500 Hz. For a rich dynamic audio response, it incorporates neodymium ferrous magnet systems. Audio transparency is delivered through the open metal mesh grilles. Additionally, these headphones come with a 6.3 mm adapter and detachable, oxygen-free copper cable.