Welcome to my nightmare.
I'm one of the eccentric few who actually just wants to shoot pictures with those old cameras, and I had to weave in and out of the collectors market just to build up my kit 15 years ago when I decided to switch to Nikon RFs from Nikon SLRs. At the time, equivalent Leica kits were considerably more expensive. Even back then the more exotic Nikkor lenses like the 50 1.1 and the 21 f/4 were priced beyond daily usability or sanity.
Fortunately, very few of those collectors seem to actually shoot with their cameras, so the everyday workmanlike lenses were and remain affordable -- the excellent 50 1.4, the 28, 85, 105 and 135. Nobody ever much discusses the 35 1.8, but it's one of the best lenses I've ever used and can still be found for $600 or so in if you're patient. My bodies were a bit pricy, but I built a top-notch kit of lenses for about $1,500. I ended up spending another $600 or so on a Zeiss biogon 21mm f4.5 to get my superwide. Of course, if I were doing it all over today I'd have gotten a CV.
Unforturnately my gear wouldn't resell for much. It was in user condition when I got it and has been well used since.