Meritline offers the Logitech Ultimate Ears 350 Noise-Isolating Earphones in Dark Silver, model no. 985-000294, for $16.99. Coupon code "MLCKW10TNL1" cuts it to $11.99. With free shipping, that's the lowest total price we could find by $6. They feature noise reduction of 22db, a frequency response of 20Hz–20kHz, and five sizes of ear cushions. Coupon expires after 300 uses.