NeweggFlash offers the Sennheiser HD 518 Over-The-Ear Audiophile Headphones for $49.95 with free shipping. That's tied with our mention from three weeks ago and the lowest total price we could find now by $10. These open-back headphones feature a frequency response of 14Hz to 26KHz, Duofol diaphragms, and a 10-foot cord. Deal ends March 6.