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