Door Wraps.
 

These look pretty cool. I have a few steel doors that I was going to remove, sand and repaint. I may just do this.
Wrap your doors

If the surface isn't smooth, you will still need to sand and paint them.

Make sure that they are using the highest quality film too if the doors get any sun exposure, or you'll be doing it again in 2 yrs and have hell pulling the film..,

Oh and that price seems high an his you sell thing seems a bit odd. Google wrap shops in your area, I'm sure there are several.

Oh and wholesale price for enough film for 3' door should be in the 20-40$ range, so at 150 he's got some hella markup and design time figured in.