Newegg has the Sony MDR-EX58V/VLT In-Ear EX Headphones with Volume Control for $15 + $3 shipping = $18 shipped
. Also available in White
with free shipping and B&H Photo Video has them in Red
with free shipping. Features 9mm 400 kJ/mÂ³ Neodymium dome type driver (CCAW), 5Hz-23KHz frequency response, and 100 dB/mW sensitivity.