I haven't used this in a number of years since buying my Gerbing's jacket but it was a lifesaver for those cold morning rides. I never had to take it above the medium setting to keep me warm on the way to work. This is the model with the heated collar as well.
The only issues are that the grommet holding the cord to the lining pulled away and I put a wire around and through it to ensure it did not pull away from the heating elements and the cheap plastic clip on the controller broke off the second time I used it.
No extra power cords included, uses same plugs as the Gerbing's and others.
$25 shipped CONUS