What's going on with the used audio gear market?

OK, maybe I am unrealistic but I've bought and sold audio gear for the past 25 years off and on for my personal use  as I change out or upgrade.  It seems that a reasonable expectation is around 50% of MSRP or somewhere close. That has been what I've always sold for and bought for. Now I see stuff priced at 80-90% of MSRP. I am talking about things that are not really statement products and can be a few years old and they want 80%.  I just don't get it, this stuff for the most part depreciates rather quickly due to the advancement of technology. Is this a hold over from the Covid Inflation effect on supply and demand? I guess that supply and demand will eventually sort it out.