Depending on what you want to do with it and how prepared you are to learn "old fashioned techniques" the F4s is a fabulous camera body - it just fits perfectly and I always was more fond of it than the F5 that I had afterwards. I only sold my 4s last year (to a chap on IOW on here) and it still felt "RIGHT" when I handled it for th elast time before posting it off.
It is MUCH quieter than the F5 too - and there is a quiet motordrive setting on a medium FPS rate (it does about 2 FPS on quite mode, just another drive setting on the left top button.
The film rewind can be done by the motor (uses more battery power) or wound back by hand. Auto loading feature was excellent - just run the film out to the take up spool and align the end of the leader with the green line, I always made sure the first hole was caught by the sprocket though. Then shut the back and hit the shutter button - it winds on to frame 1 automatically. If you are mean, like me, by putting the FIRST sprocket hole on the sprocket tooth, you can get 38 frames out of a 36 roll!
Focus is gear drin for older lenses, but AF1 and AFS lenses work like on any other, using their own motor. Single, small focus point in centre of frame is slow, but very accurate (always a Nikon strength. Accuracy over speed).
Build is second to none - I saw one dropped out of a helicopter with an 80-200 on it. I think it was 4s, Nikon anyway - it was fine and was used as soon as the broken filter was removed. Lens was a bit bent, but body fine.
The shutter was a lightweight alloy, not as pretty as the earlier titanium, honeycomb shutters of the FM2 and FE2, but should be good for 500,000 or close.
An excellent choice - and very comfortable for manual focus too. Don't worry about older glass either - primes will work brilliantly and things like the 17-35, will be astonishingly good, liewise the 35-70 f2.8D. D lenseswould be your best choices. NOt G, unless you use them on digi bodies as well.
Price? From £200 - £350 I would say.