This Earphone

Tiger Direct has the Shure SE110 Sound Isolating Earphones for $50 with free shipping. Comfortable sound isolating sleeves block over 90 percent of ambient noise.

Product description from Tiger Direct:

SE110 Sound Isolating Earphones
Featuring Balanced MicroSpeakers, these sound isolating earphones deliver optimized audio for a rich, lifelike listening experience. Assorted sleeves and a modular cable provide unmatched comfort and customiza
tion.

Designed for music lovers looking to upgrade the earphones included with their MP3 players, the compact SE110 is a perfect introduction to the stunning performance of Shure earphones. Evolved from earphone technology road-tested by pro musicians and perfected by Shure engineers, the compact SE110 delivers a rich, lifelike listening experience that?s free from outside noise.