Harman Audio again offers its factory-refurbished Harman Kardon CL Precision On-Ear Headphones in Black/Silver, model no. HARKAR-CL-Z, for $49 with free shipping. That's tied with our mention from November as the best price we've seen. (It's also $26 under the best price we could find for a new set today.) These folding headphones feature a 16Hz to 20kHz frequency response, leather earpads, detachable cable, three-button remote, and microphone. A 1-year Harman Kardon warranty applies.