If 250K for a Prout 50 floats your boat
, then by all means.
However fully rebuilt versions don't run that high.
Remember this is a 34+ year old boat, and while I personally love the old Prouts, but there is a limit to their worth in financial terms.
Don't underestimate the work
involved in refitting this boat, it is huge!
True they don't have the space of a more modern 45 foot cat, but it is still a serious amount of space.