r32 GTR - Nismo

[Stromulux]

Hi all,

I'm after some info from the gurus here.
I have a friend who's going through a divorce, things are getting nice and messy as these things can do. 
The couple in question have an r32 GTR which has been in storage for the last 12 years. Completely bone stock Nismo edition from what I understand.
200,000 1989

So the question, what are these things worth nowadays?
I was shopping for so long before finding my 32, so I'm across the value of your standard GTRs, but the Nismo throws a bit of a curve ball.  

[Duncan]

AFAIK Nismo addition was simply a GTR with larger (N1) turbos (for homologation purposes), and not particularly rare despite the naming. Not really limited edition, and no larger brakes or wheels like later v-specs or N1s

[Stromulux]

Larger steel wheel turbos, deleted rear wiper, no abs, different body kit.. among other things. 

There were only 560 made, so definitely not crazy rare, but they're also not the most common things out there. 
I'm curious what they're fetching.