This deal has ended.
Update: this deal is now dead. These have jumped up $11 in price. The Sennheiser PX 100 Collapsible Headphones are now on sale at Amazon for only $24.97. Receiving an impressive 4.5 out of 5 stars from over 1000 reviewers, these supra-aural headphones collapse into a compact size and come with a case. Shipping is free if you choose a free Amazon Prime trial and there's no sales tax (except KS, KY, ND, NY, WA).