I base my statement on US Audiomart, where I moderated the forums, and this may not be representative of the broader market at all, and certainly does not take into account Craigslist and the like, but currently there are 11,000 active listings on USAM, that has ranged to over 24,000 at times. Assuming their data is correct, that is very low and much lower than the pandemic years.
So granted I may be using the wrong metric. What metric are you using?