This deal has ended.
Update: the deal is dead! This has jumped up $10 in price. Possibly only for a few hours, the Etymotic Research ER6i Isolator In-Ear Earphones are on sale at Amazon for only $49.99. Receiving 4 out of 5 stars from over 800 buyers, these feature a noise isolation of 34-36 dB that surpasses almost all other earphones. Shipping is free and there's no sales tax (except KS, KY, ND, NY, WA). Compare this price to $90 at Home Depot.