For its newsletter subscribers only, newegg offers the Sennheiser CX 475 In-Ear Headphones for $49.95. Coupon code "EMCNEJE224" cuts them to $19.95. With free shipping, that's the lowest total price we could find by $9, although we saw them for $2 less three weeks ago (since expired). These earbuds feature a 19Hz to 20.5kHz frequency response, 4-foot cord, and three silicone ear adapters. Deal ends May 21.