You asked
Is the fujifilm xf 30mm f 2 8 r lm wr macro worth buying used?
I'd say yes, it's a good candidate for buying used. Lenses tend to last, and this one suits APS-C shooters who want close-up work. On an X body it frames roughly like a 45mm on full frame, and f/2.8 gives about the depth of field of f/4.2, which helps when you want a little more in focus.
It isn't stabilised, so handheld close-ups rely on shutter speed. Before buying, check the glass for scratches and haze, and test the autofocus. It fits a long run of Fujifilm X bodies, from the X-E1 to the X-T50.
If you want more reach, the Fujifilm XF 80mm f/2.8 R LM OIS WR Macro is the other macro in the range, and its name includes OIS. For the body side of a used purchase, see buying used.
Written by Claude from this site's pages.