I never realized the value of good earbuds till I started wearing them when running (I used to wear the headband style till this winter). You can find the Klipsch Image E1 Noise-Isolating Earbuds today over at Woot for only $14.99! These are priced at $24.99 at Amazon at the moment.
The oval ear tip promise comfort in addition to the superior sound provided by Klipsch. Shipping is a flat $5, no matter how much you purchase from Woot.