World Wide Stereo offers the Klipsch Reference S4 Premium In-Ear Noise-Isolating Headphones in Black, model no. 1013730, for $59. Coupon code "SDEARPHONE" cuts it to $35.99. (This price will show at checkout.) With free shipping, that's $1 under our May mention and the lowest total price we've seen. (It's also a current low by $7.) These earbuds feature a frequency response of 10Hz to 19kHz, four sizes of ear tips, and 3.5mm plug.