I think the truth is somewhere in the middle.
This whole "free market" thing has fucked everything up in the used market (at least for musical instruments).
Yes, everyone can ask whatever price he wants that theoretically no one will pay but,
every now and then there will always be a stupid asshole who will pay this absurd price (for his own personal reasons).
So, the next seller will ask the same stupid price for the same product or even higher than that.
And every one of us who is looking to buy something used (there is a reason for that obviously) for a reasonably price, will get pretty much fucked.
And that's why the used market is FUBAR.
There should be a price limit for used equipment if you ask me.
A price limit depending the condition of the product and the price it was sold for when it was new.
It is NOT normal to sell a studio pre for 1.300$.
If we think like that then, the madness will have no limit..