Could also be that desert land and transportation are both dirt cheap.
Desert land is cheaper. In my initial scenario in the first post, envision MoonShadow's home to be on a desert plot. As for transportation, is $800 cheap to transport a sixteen foot skin that is part of an aileron, so that it can be treated with a coating?
I paid $450 to transport my six foot tal Sonic Championship arcade cabinet, and that was on a truck with other shipments, too, so that sounds cheap, yeah.
It's also likely cheaper than the costs the company would've had to deal with if it built near other people if zoning laws didn't exist.