Harman Audio offers its Harman Kardon IENC Noise-Canceling In-Ear Headphones in Black/Silver for $29.99 with free shipping. That's the lowest total price we could find by $12, although we saw them for $2 less in November. Features include a 12Hz to 24kHz frequency response, 9mm drivers, active noise cancellation, and battery life of up to 35 hours.