I’ve had those! It sounded like such a tech bro bs at first, then I found them secondhand for a steal. The whole “it adjusts to your ear canal” actually does something! In the end what made me sell them was use on the go. Every bump or movement of your head made the in ear part move and thus make weird noise cancelling sounds when that happened.

Great headphones and still miss them

I wouldn’t pay it, but that is the price you’d normally pay for custom keycaps on Etsy as well. Quite often for lower quality too