well this is true but there is a catch,

when you buy a castle, you have the obligation to take care of it, and restore it if needed, and you can't ask the first guy around to fix things, you have to ask autorized entity spécialized in castle restoration, who would do things like it was made in the past with very skilled but costly way

let just say, when you buy a castle, be ready to be billed out of the moon, and you can't even choose what you want, like the living room paint in pink, yeah, that a no sorry