You are side stepping the point.
My guess is that you don't know of one, in the whole damn country, that is for sale "at the moment". .... and that those three (when they do come up for sale, (which is not at the moment)) are all from the same owner..... Correct?
I would suggest that world wide, they are getting a teensy bit on the un common side, and that these prices are indicative of the future. Hurry up with getting your bits gathered.
How much change out of a small fortune do you think you might keep, if you were able to buy one of the three you mentioned.