BuyDig offers the Able Planet Noise-Canceling Headphones in Black, model no. NC300BT, for $28.99 with free shipping. That's a buck below our mention from a month ago and the lowest total price we've seen for these headphones. (It's a current low by $6.) These headphones feature an adjustable headband, in-line volume control, LINX audio technology, and 20Hz to 20kHz frequency response.