So Yes. You are correct, these screen rooms will cost a lot of money, they need donations to help pay for their new screen rooms and they have a lot of land (3 different locations) where they grow the citrus varieties. I only visited the one in UCR Riverside CA, really nice, but I did not see any citrus trees covered inside of a screen room yet, that was 2 years ago when I went there with our CRFG chapter for a tour.
But they should pass the cost for the screen rooms to the guys who make all the money from selling trees, like the whole nurseries, citrus growers, and not private collectors. The private collectors keep the grafted trees for their personal fruits to eat.
There is a document included in the received budwood Fed Ex box that says you are getting these budwood for private growing at your home, not allowed to move any scions from the addressed location.