That helmet camera setup is about $300 for the helmet camera and $500 for the Sony camcorder.
If I were to do it again I would do this:
Get the case and fastener for the helmet camera from helmetcamera.com (Nice aluminum with a lens that can't catch snow.
Then I would get the 480 camera plan with wiring harness from xtremerecall.com
We started with the full helmetcamera.com setup but it had too many connections to be reliable - things kept unplugging.