Luckily in my city there are aren't enough people who could afford that kind of money to justify opening such a school. The two private schools I know of are a Steiner primary at $6000 a year and a prep school for years 7/8, I know a lot of not very affluent people who manage the latter simply because it is short term even though it is expensive by our standards.

And yes profoundly affluent was probably rough but I think it came under poetic license. It sounds like an excellent school for the population it serves - and who could ask for more?