I tend to agree with Firepowers assesment.  Sounds too good to be true.

I have an idea. Buy some decent titles, get someone to reco them with no expense spared, then whack them in a newly printed box and make some profits for Xmas.

If they are really New in Box, and are the real McCoy, I say the owner must have had a crystal ball or was just the most patient man on earth.

Anyone spending $20 grand on ONE machine ? 

Has been known to happen...

one of these sold for just under that not too long back. Not sure one has been sold since though as asking price is always in the US$20K region now

Gottlieb 1951 MERMAID

http://www.ipdb.org/search.pl?any=mermaid&searchtype=quick#1574