World Wide Stereo offers the 11.9-gram Klipsch Reference S4 Premium In-Ear Noise-Isolating Headphones, model no. 1013730, for $79. Coupon code "S611489" cuts it to $54.99. With free shipping, that's tied with our mention from two weeks ago and the lowest total price we could find by $24. Features include four different-sized ear tips, storage case, clothing clip, 10Hz to 19kHz frequency response, and more.