Robert Winter recently was asking $25000 for a NIB Scared Stiff.
Could be the same machine?

You are spot on.  

I just contacted the seller and it's the same guy.
http://robertwinter.com/pinball/ss/ebay/index.htm

He had another one that he brokered the sale of about 10 years ago.
http://robertwinter.com/pinball/ss/ebay/auction.html

This is another that Elvira had given to her as part of the licensing deal with B/W back in '96.

Apparently she has more NIB machines, but he is not at liberty to say how many.