Today only, until 6 pm ET (or 100% claimed), Amazon offers the ContourROAM 1600 1080p Waterproof Hands-Free HD Digital Camcorder
with free shipping
. That's the lowest total price we could find by $81 and the least expensive waterproof 1080p "helmetcam" we've seen. It's fully waterproof (up to 1 meter) and features 1080p recording, 5-megapixel still photos, microSDHC card slot, USB connectivity, and more.