Newegg offers the Sennheiser HD 429s Over-Ear Headphones in Black for $34.95. This $10 mail-in rebate cuts it to $24.95. With 99 cents for shipping, that's $9 under our September mention and the lowest total price we've seen. (It's also a current price low by $17.) They're compatible with most smartphones and tablets and feature an 18Hz to 20kHz frequency response, 32 Ohms impedance, -39dB sensitivity, and tangle-free cord. Rebate ends January 27.