What makes an expensive speaker expensive

When one plunks down $10,000 $50,000 and more for a speaker you’re paying for awesome sound, perhaps an elegant or outlandish style, some prestige ... but what makes the price what it is?

Are the materials in a $95,000 set of speakers really that expensive? Or are you paying a designer who has determined he can make more by selling a few at a really high price as compared to a lot at a low price?

And at what point do you stop using price as a gauge to the quality? Would you be surprised to see $30,000 speakers "outperform" $150,000 speakers?

Too much time on my hands today I guess.