The secondary market is always volatile. Used prices are set by the seller and confirmed by the buyer. As an example concerning trains:
Last year I purchased the latest Santa Fe Super Chief with the two additional cars. It was my first Lionel purchase ever. Since Lionel has made everything I could ever think of using on my planned layout, I bought a stack of old catalogs, virtually every catalog from 2000 forward. )I’m only interested in command equipment an, only locomotives with flywheel motors as I came to o scale from LGB and I’m use to locomotives running smoothly at slow speeds.)
I found that a few years back Lionel had issued the same set without remote. I also discovered that an A Dummy and B Dummy were made at the same time. Using saved searches on eBay, I found both. I paid $119 for each on separate occasions from different sellers. Now less than a year later someone bid an A Dummy up to $203. Now you cannot find an A Dummy or a B Dummy for less than $200. Every one of them listed is now selling for at least $200. I know because I still have the searches active and about every three weeks or so one or the other shows up.
As long as someone is willing to pay ridiculous prices for used merchandise then people will ask exorbitant prices and get them
As an addendum to this I must add that I don’t know if Lionel monitors the secondary market. They should. (I was in marketing for most of my working life and old habits die hard and I monitor everything I’m interested in with the same enthusiasm as when I was working.) Some of the items I’ve found are real opportunities for Lionel or any manufacturer.