As one of its daily deals, WorldWideStereo via Sears offers the Klipsch Reference S4 Premium In-Ear Noise-Isolating Headphones, model no. 1013730, for $45.50 with free shipping. That's $4 under our mention from two weeks ago and the lowest total price we could find by $11. Sales tax is added where applicable. Features include four different-sized ear tips, storage case, clothing clip, 10Hz to 19kHz frequency response, and more. Deal ends today.