I used to work for a truss manufacturer that supplied to both one time customers and to large home builders. It is correct you usually make more money off the single jobs, but you have to also supply the guy that is guaranteeing to buy 1200 units a year or they will not come back. This is no different really, even his statement of everyone working on these, including the subs. Full disclosure I bought mine from SFRC but I am in no hurry either.
These are strange times we live in right now. Happy that a company is running full bore right now producing non critical manufacturing.