Mistwell
Crusty Old Meatwad
How about a 3 masted ship? Or a 12 bedroom estate? How much does a moathouse cost?
Sure the GM can make up this stuff. But alot of GMs don't want to deal with that sort of thing.
Pretty sure all three of your examples are in the books. I know the ship is in the Adventurer's Vault. I don't recall which book had the buildings, but one of them does.
What I don't understand is why would anyone oppose a book like this? It does nothing but give players and GMs tender to kindle the fires of inspiration.
For the really minor stuff, it's an artificial crutch that makes games worse in my opinion. You don't want people feeling like they need to look every little thing up before they can use it in their game. For a certain basic level, it's best if people get in the habit of just doing it on the fly. And believe me, it really is a crutch. You don't need the stats for the little stuff, you just think you do because you have a habit of looking to a source to tell you what to do when you could just be coming up with this stuff as you go with almost no effort and better impact on your game.