USA and Australia, and doubtless most countries, have online boat sales sites. One in Oz has a "Recent Price Reductions" list. I guess it`s intended for "bargain hunters", but it`s also a way of giving seller`s listings a reward boost for making a reduction. Some sites encourage reductions after a certain period elapses, more sales produces better sales performance figures which might encourage more listings, as the site then looks more successful to potential advertisers.
Here`s what it looks like today. You get everything, not just the type of boat or size that may interest you:
https://www.boatsonline.com.au/boats...reduction.html
Probably happens elsewhere too,
www.boatsonline.com.au is unlikely to be the only one.