Harman Audio offers its factory-refurbished AKG K495 NC Active Noise-Cancelling Headphones, model no. K495NC-Z, for $139 with free shipping. That's the lowest total price we could find by $17 for this item in any condition. Features include 20Hz to 20kHz frequency response, 3D-Axis2 folding mechanism, portable USB charger and cable, and two lengths of audio cable. A 1-year Harman Audio warranty applies.