Yep, a couple of them appear in the 'Out In The Fields' music video.
I know, right? I'm often on the lookout for an '86 530WP. Should've got one when people didn't care and they were like $200.
The Lukather has been a bit more always but not significantly (same with the Holdsworth, which is bonkers now). From what I can tell, the only significant custom features were the specified bridge pu and the ebony fretboard. I don't know if it has a specific neck shape or same as was on regular RSs. But there weren't that many made either, so there's also that.