"Roger" wrote in message
...

By the time you have enough to make a small dent the raw materials
will become scarce and expensive.

Which raw materials are you referring to?

The wast products currently used. Even using soybeans (please do we
raise them) it's going to require some breakthroughs to make a lot of
this.

Use many soybeans and the price will really go up.

Ah...the old Supply & Demand!!