newegg offers the Sennheiser CX 200 Earbud Stereo Headphones, model no. 502544, for $19.99. This $10 mail-in rebate cuts it to $9.99. With free shipping, that's $5 under our mention two days ago and the lowest total price we've seen in almost three years. (It's a current price low by $17.) Features include a 3.5mm plug, noise isolation, and a frequency response of 20Hz to 20kHz. Rebate expires June 30.