The thing about the Nikon cameras is they seldom need service. You can buy a beater Nikkormat for $30 and it will probably work fine. I love the cameras, but don't love many of Nikon's lenses. However, w/ the availability of adapters, now I can put all sorts of lenses on my Nikon cameras. This works out great.
I think the best film bargains are all the AF cameras that can be used w/ MF lenses. My $13 N70 is a fun camera! No, it's not built to the standard of my Leicaflex, but it has a fast motorized film advance, spot, matrix and center metering, it's light and small, has a 1/4000 top shutter speed, and if it ever dies it will be $5 to $15 to replace it.