Harman Kardon offers its Harman Kardon IENC Noise-Canceling In-Ear Headphones in Black/Silver for $27.99 with free shipping. That's tied with our August mention, the best now by $14, and the lowest total price we've seen. Features include a 12Hz to 24kHz frequency response, 9mm drivers, 32-ohm impedance, active noise cancellation, and battery life of up to 35 hours.