Thats a good question. I think it all started when a used boat guy took in a trade for some dope who took a super low offer. He started a precident and it has stuck ever since. I also agree that prices are way too high for new boats and the next guy just won't accept this and won't pay it. Remember anything is only worth as much as someone is willing to pay for it. It is too bad because based on the actual run time a boat wears much less than an auto. Just buy used and don't worry about it.