Around $35k not including room acoustics or home.
This of course assumes $20k of that is in speakers, if they had a brand name you’d pay around that much, but since I made them, the parts cost was $3K.
So, reality was around $15k but you literally can’t buy what I have from a store and I would not trade my speakers for anything. So, priceless?
I make no claim that my system is better than yours. Just better for me. :-)