The process demonstrated here is nothing more than anyone could do themselves. its not like Greatwitch john's process which is actually digitally printed direct to glass (a much more costly way of printing).
The way these are done is almost the same way that I demonstrated here:

http://aussiepinball.com/index.php?topic=8731.0

Only difference being that my blockout on the back is sprayed on and theirs is a print.
The vacuum seal bit is a beef up and the oven process is just a lamination to shrink wrap the print to the glass and can be done with a hair drier.

I was under the impression that to get a glass from these guys, you had to supply a glass?