That said, marketplaces could implement a quality AI valuation and allow visitors to sort by “Best Value” instead of just price, traffic, offers, etc. Basically rank the results by the ratio of the asking price to appraised value. That way the complete idiots and dreamers get buried and less time is wasted. Showing a bunch of domains that will never sell hurts the marketplaces’ chance of making a sale and earning a commission.
Sorting by price is ineffective because then you only get “crap” or “crazy” depending on which way you sort. But a Best Value sort could show a million dollar domain priced at $200k right next to a $5k domain priced at $1k.
And for NamePros, you can solve the problem like Snoopy said, just by not allowing more than one or two bumps before mods close the thread. The sellers will eventually learn how to price for resellers when they make no sales, and less time will be wasted. That way you only have to see a dumb thread two or three times instead of 150.