Why isn't better quality used gear being made available?

@grislybutter Yeah, I got the joke and just went with it. 
 

Here is the bad news: while your speakers are worth 50K, they are only as good as $500 speakers. Everybody knows that $500 speakers are as good as 3K speakers.

Heh heh.  And so it goes…

My experience when listening to a product line up of speakers is that each level speaker sounds better than the lower level one. This is nearly always true. For instance have listened to much of the Sonus Faber, B&W, Wilson, Magico, and Dynaudio lines. Every increment up gets better sound,

Making comparisons between brands is more complicated. There are vastly different house sounds… say Magico vs Sonus Faber. So if you compare a $10K Sonus Faber which you love the sound of with an even $25K Wilson speaker which you simply do not like the house sound, then you may think it is not worth it.

But in general $10K jumps net you very much better speakers in nearly all aspects. Companies design them that way and if they didn’t the market would force the company to do so by not buying the more expensive speaker without better sound. Most of us spend a lot of time listening to speakers before expending an automobile sized chunk of money.

Is the OP looking for advice on where to find ’Quality used gear’?

As it is to be ’used gear’, Which is the preferred era range of the production?

Obviously Quality and used can have a very broad range in purchase prices, does the OP have a budget constraint?

From the OP as their follow up posts, only conjecture seems to be forthcoming. I take such statements with a ’pinch of salt’.

Is one really going to part with $25K for any item used in a HiFi system, using the fantasy, the purchase is on par with a $50K used/new item.

I hope not.

Perhaps when you get to a point that tossing 50% of current to spend 100% for new that might be 5% better … you just stick with what you have