not saying this is or isnt a good buy, it isnt mine, i dont know the guy.
just suggesting that if other routes fail that ebay has at least two for sale now.
the one i copied a link to is a michigan.... that co. is still in business to the best of my knowledge, so you may well be able to get a brand new one.
That looks like a pretty good price, and is new. However, it is a pretty flat pitch, ok for a oversized/underpowered boat. 12-1/8" X 14" was original equipment and would move a house.