Amazon offers the Logitech Ultimate Ears 700 Noise-Isolating Earphones in Dark Silver, model no. 985-000172, bundled with a $2 Amazon MP3 credit for $101.97 with free shipping. (The credit will be applied automatically to your account after the headphones are shipped.) That's the lowest total price we could find by $18. These earbuds feature a frequency response of 20Hz to 20kHz, noise isolation to 26dB, five sizes of ear cushions, two pairs of Comply foam tips, 46" cord, and more.

Orders placed by December 19 are guaranteed to arrive by Christmas.