Well, I'm not in the premium bra market at all so I couldn't tell. I'm still buying one every few month and enduring the metal wires stabbing me in the chest.

That being said, a quick googling gives all kind of pries.

https://secretsfromyoursister.com/ <- $80-$200

https://www.kickstarter.com/projects/1976927179/anesi-bra-th... <- 80$ but kickstarter

https://foreveryourslingerie.ca/product/?cName=BRAS&pName=Pr... <- 144$

https://foreveryourslingerie.ca/product/?cName=BRAS&pName=Em... <- 209$

In my eyes, the pricing is similar to comparing a regular hair dryer ($17) to the Dyson Supersonic hairdryer ($399).

Or perhaps a cheap pair of boots ($49) that lasts one winter to an expensive pair ($250+) that lasts a few years.