newegg offers the Sennheiser CX301 In-Ear Headphones for $39.99. Coupon code "TECH4LESS26" cuts them to $19.99. With free shipping, that's the lowest total price we could find by $17, although we saw them for $3 less last week (since expired). They feature a 19Hz to 21KHz frequency response, 3.5mm connectors, and more. Deal ends April 29.