Harman Audio offers its factory-refurbished Harman Kardon NC Noise-Cancelling Over-Ear Headphones, model no. HARKAR-NC-Z, for $129 with free shipping. That's $20 below our July mention of a refurb and the lowest total price we've seen. (It's also $141 under the best price we could find for a new set.) These wired headphones feature 40 hours of battery life per charge and a frequency response of 16Hz to 20kHz. A 1-year Harman Kardon warranty applies. Deal ends September 28.