How do you make a vacuum forming machine?

Here are some plans for a vacuum forming machine between $20 and $200. Sounds right?
I made about $1,500, but it was for light industrial use, including manual, automatic and semi-automatic mode.
What are you going to do with your machine?
Can you talk to professor Steven Jones for about 8-10 minutes? This is a 45-minute video, which is well worth a look. At least, pass it on to those you care about.