This deal has ended.
Update: that was fast! This deal is dead! Only for a few hours, Amazon has the Ultimate Ears TripleFi 10vi Noise Isolating Earphones on sale for just $99.99, the lowest price available anywhere by a mile. These are of such a high-performance level that they're almost pointless to describe. They feature integrated passive crossover, three separate armature speakers, dual acoustic filters, and a built-in mic. Shipping is free and there is no sales tax (except KS, KY, ND, NY, WA). Compare this price to $420 at Buy.com via Amazon Marketplace.