Market forces have always determined pricing for almost anything, whether it be real estate, vehicles, boats, rv's or simply most consumer goods. Buying a boat in this market is probably not the smartest financial decision you can make, but, supply and demand is what drives a market. Contrary to my better judgement I bought a boat in this market! However, it seems as though aluminum "fishing" boats are the ones are demanding crazy prices, less so glass boats. I sold an aluminum boat a few years ago for what I thought was a "fair" price. Today that boat will command thousands more, (market demand).
Covid has essentially put a stop to peoples recreational travel plans causing them to rethink their type of vacation, I know it has ours in retirement. In our first full year of retirement we had lots of travel booked that didn't happen. Instead, we decided to make the best of it and pulled the trailer to many different campgrounds. We figured that maybe we would try a year of seasonal camping in 2021 where we could also dock the boat, good luck! Nothing now available anywhere!
I guess that things will re-adjust, maybe, in the next 12-24 months. It may be a scary time if and when it does.