Harman Audio offers its factory-refurbished Harman Kardon NC Noise-Cancelling Over-Ear Headphones, model no. HARKAR-NC, for $209.99. Coupon code "NCDEAL" cuts it to $99. With free shipping, that's tied with our mention from last month and the lowest total price we could find by $81. These wired headphones feature 40 hours of active noise cancellation per charge and a frequency response of 16Hz to 20kHz. A 1-year Harman Kardon warranty applies. Deal ends June 30.