I know we are in the midst of quite a soft market.
That prices across the board have taken a tumble and that the reality of any "valuation" crumbles when it meets the market.

I usually use watch-recon, watch-charts and Chrono24 and a trawl through sites such as this to get a handle on ballpark figures. My rule of thumb for Chrono24 prices is that real world is 20% less.

I've been spitballing selling 1 or 2 pieces recently and came across the Chrono24 appraisal tool https://www.chrono24.com/info/valuation.htm
What kind of faith can one have in the price estimates it delivers?