NeweggFlash offers the Sennheiser HD 439 Over-The-Ear Portable Headphones for $39.95 with free shipping. That's tied with last month's mention and the lowest total price we could find now by $5, although we saw them for $3 less in August. These closed-back headphones feature 4-foot and 10-foot detachable cables, 32-ohm impedance, and a 17Hz to 22.5kHz frequency response. Deal ends March 6.