For those of you who had spent over hundred thousand dollars for your sound system.

How do you find out if you could have got better sound cheaper?

It is in the nature of decisions that once made there can be no going back.  You choose your road and never see the others.  Yes you could sell it all up and buy cheaper.                But why, assuming you don't need the money?  

We should cut out hypotheticals here, they go nowhere.

The core of my system is almost 20 years old, with only power treatment and my music server being added in the last five years.  The speakers, linestage and amp are probably worth more now than when they were purchased because they are made with very collectible parts (the amp and linestage are essentially built with Western Electric parts, the midrange driver/horn are very rare Western Electric components).  I really don't intend to change any component out.  I might upgrade the crossover of my speaker or add better internal wiring to the speakers, but, I don't do much in the way of swapping out components.  

@inna 

To extend the OP’s comments. We would love to see your virtual system… sounds like a great one. Hard to appreciate unless we can see the components in its venue. Thanks.

When one is deeply into something, acceptable prices can become crazy.  An audio buddy is currently in the process of remodeling his summer place.  He mentioned that the refrigerator he ordered will not be delivered till February 2023.  I asked him about what model can be so back ordered and he said it’s a Subzero.  When I asked about the price, he said it’s $14,000.  My reaction:  $14,000 dollars!! That’s almost as much as a good interconnect!!

No, I don't have a great sound, I have a not too bad mid-fi probably $17k or so sound. I don't know how much things cost when new. I bought only two components new - cartridge and a pair of interconnects, $500 and $1k respectively.

It really gets expensive so I decided to hold it where it is now for the moment.

But I will keep upgrading for as long as I enjoy music and good sound.

If I had $25k for new speakers I wouldn't know what to get, by the way.