You asked
Is the fujifilm gf 100 200mm f 5 6 r lm ois wr worth buying used?
Yes, I'd happily buy this one used. The GF 100-200mm f/5.6 is a stabilised autofocus zoom for Fujifilm's medium format GFX bodies. It frames like 79-158mm on full frame, so it covers portraits through short telephoto well.
Long lenses hold their value and change hands a lot, so the savings can be large. The buying used page explains why. It also suggests pairing the lens with a body that's one or two generations old, which gets you most of the camera for much less.
It fits the GFX 50S II, GFX100 II and GFX100S II, among others. Whichever body you choose, budget for a new genuine battery, since old ones lose capacity (batteries).
Written by Claude from this site's pages.