World Wide Stereo offers the Klipsch Reference S4i In-Ear Noise-Isolating Headphones with Microphone in Black, model no. 1013730, for $79. Coupon code "S611489" cuts them to $54.99. With free shipping, that's $13 under our mention from two weeks ago and the lowest total price we could find by $24. These earbuds feature a frequency response of 10Hz to 19kHz, 3-button mic and remote, home theater-style cables, four different-sized ear tips, carrying case, and more.