There are two standard ways of pricing: First, the market: basically compare your product with the available on performance and aesthetics, then to price accordingly. The second is cost plus… basically all costs plus the profit you require. If what you want to manufacture has the market price less than the cost plus price… you should not produce it… you lose money.
As a consumer you have a choice. Buy it or don’t. So the market of consumers will determine if the speakers you are talking about are worth it. There are a few people out there with lots of money with no sense, but this is the exception, not the rule. Folks that have made a lot of money typically have worked for it by being perceptive, educated, smart and not wasting money. So, if these speakers are successful. There is probably something to them.