Today only, newegg offers the Scoshe tapLINE In-Ear Headphones for Apple iPhone / iPod, model no. IDR350M, for $14.99. With free shipping, that's the lowest total price we could find by $11. Features include tapLINE control for iPhone (which allows for music and video playback), in-line microphone, 52" cable, 17Hz to 20kHz frequency response, and more.

Of note, although these headphones have features that will only work with Apple products, they can still be used as normal earphones with other audio sources.