DOF preview had been disappearing on cameras when I got into photography in late 1996 so the Nikon N8008/8008s was still fetching almost $600 used. The next AF option with DOF preview would have been a new N90s at $900. One of the first things I won on eBay years ago was a PAIR of N8008s bodies for $32 when they became worthless. I haven't put film through them in a long time but put batteries in and run the shutters and they still work fine. It's still fun to have something that used to be worth a lot of money.
I have an old 1000F Hasselblad that I bought in 1966-67 for $300. With 2 lenses. It only syncs with flash at 1/30sec. I didn't know that and wasted a few rolls of film before I found out. I was in high school.
My M3 is beat to shit, but it has always been fully serviced and works flawlessly. No red dot, dents, 0.25% vulcanite, who cares? It's crisp, clean, and precise.