Is the sony fe 100 400mm f 4 5 gm oss worth buying used?

Yes, I'd look at this one used. Long telephoto zooms change hands often, and the savings can be large. The guide to buying used explains why this route works so well for gear built to last.

The Sony FE 100-400mm f/4.5 GM OSS is stabilised and works on a long list of Sony E bodies. On full frame, the Sony a7 III or Sony a7 IV gives you the full 100-400mm reach. On APS-C, such as the Sony a6400, it frames like 150-600mm, which is great for wildlife.

Check the lens over carefully before you pay, and budget for a new genuine battery if you buy the body used too; see batteries.

Written by Claude from this site's pages.