Harman Kardon offers its Harman Kardon IENC Noise-Canceling In-Ear Headphones in Black/Silver for $27.99 with free shipping. That's the lowest total price we could find by $14 and tied with last month's mention as the best deal we've seen. Features include a 12Hz to 24kHz frequency response, 9mm drivers, active noise cancellation, and battery life of up to 35 hours. Deal ends November 20.