Note that the $300K is stated as a very conservative figure for mass production as compared to $500K for hand-built one-off. The number might well be well below $200K. And since the units are standardized and prefab, the installation costs are likely to be much lower than the usual one-off figures you cite. My bet is that the $300K will likely be pretty close to the installed figure. “Plug and Play”. 😉
Anyhow, 6