newegg offers the Sennheiser CX301 In-Ear Headphones for $39.95. Coupon code "CLRNCMDNS44" cuts it to $24.99. With free shipping, that's the lowest total price we could find by $12, although we saw them for $5 less last week (since expired). They feature a 19Hz to 21KHz frequency response, 3.5mm connectors, and more. Deal ends April 1.