I have heard in interviews that Pat has some Safecrackers - but they may have either been made of leftover parts, or made very early in the test process and I believe he bought them from WMS as 'scrap'.
I know Elvira sold her 'personal' Scared Stiff years ago, and she had others, or so was rumored. There were pictures of more than 1 NIB pin shown in several of the pictures.
No clue what deals different designers got. I remember seeing at one point that Pat got 2 of some games.
NGG may be a hard sell. Plenty of NIBs were closed out for under 2k. Would be neat to get Pat's game if you were a NGG fan.