Buy.com is offering the Radius Atomic Bass earphones (model no. HP-CAF11R) for $19.99, which is $30 off the list price of $49.99 and the lowest price we have seen on these headphones by around $15.  FREE shipping is included and sales tax applies for residents of New York and California.
 

The Radius Atomic Bass earphones are constructed with ultra-light aluminum and are tailor made to deliver rich, crisp bass provided by the unique shape with a lengthened sound chamber.  They have a 9mm neodymium magnent, 3.5mm stereo mini plug and a frequency response of 20Hz-20kHz.