Adorama offers the Able Planet Sound Clarity Over-The-Ear Active Noise-Canceling Headphones in Black/Chrome, model no. NC550BC, or Silver, model no. NC550S, for $49.99 with free shipping. That's tied with our mention from May and the lowest total price we could find by $34. (Most stores charge $150 or more.) They feature active noise cancellation via two AAA batteries (included), LINX audio technology with remote and microphone, airplane adapter, and 20Hz to 20kHz frequency response.