PricePlunge offers the Logitech Ultimate Ears 200vi Noise-Isolating Headphones in Blue, model no. 985-000293, for $4.99 plus $1.99 for shipping. That's $5 under the lowest total price we could find for any color, and the best price we've seen for a new pair of these earphones. (We last saw a refurb for a buck less in March.) These headphones feature a frequency response of 20Hz to 20kHz, in-line controls for music and phone functions, integrated microphone, and five sizes of ear cushions. Deal ends December 26.