Amazon offers the Bose IE2 In-Ear Headphones for $69.95 with free shipping. (P.C. Richard & Son offers it for the same price.) That's the lowest total price we could find by $30, although four days ago we saw it for $4 less. They feature an angled plug, three sizes of ear tips, and carry case.
P.C. Richard & Son also offers the Bose MIE2i Mobile Headset for Android, Windows Phone 8, or Blackberry for $90.97 with free shipping. That's the lowest total price we could find by $13. (Need the Apple version? Amazon offers it for $103.99 with free shipping, a price low by $15.) It features an in-line microphone and controls, three sizes of silicone ear tips, and a protective carrying case.