I saw a similar demo not too long ago. What I was interested in was the
mechanical grinder/slicer. It looked like a fairly simple mechincal
device (handle to turn, a top section to put a slicer cone in, a metal
bar connecting it to the clamp for the table, and a few different cones
to put on it. They wanted $200. Wow, for that price, I'll get a good
cuisinart and a massive down payment on a dishwaser. I would have
popped for it a $50, and it can probably be produced in China for under
$5. It can probably be produced in the good ole US of A for under $10.

I wondered if the first person in line was a stooge. Don't get me
wrong, the product(s) looked fine, it is just that much of this can be
done in a set of pressure cookers that would cost less (!) Most of it
could even be done with a cheap pot with a lid and $5 steaming basket.
Many of the veggies could even be cooked in plain old cookware without
water, and certainly with far less water than they used in the demo.
The carrots were like carrots cooked in a nuker. No better, no worse.
Yes, they were much better than boiled (to h***) carrots cooked in 3x
their volume of water. Duh.

However, If one of you did get the whole shebang, I'll still pop $50
for the slicer.<g>

Dean G.
Maybe I should go into sales. The few such jobs I had paid well, and
didn't even require being a price gouger.