You asked
Is the nikon af s dx 55 200mm f 4 5 6g ed vr ii worth buying used?
Yes, I think it's a good used buy. Lenses hold their value much better than bodies, so you pay less up front and lose little if you sell later. Buying used explains why that makes trying a focal length almost free.
This is a stabilised autofocus zoom for Nikon F mounts. On an APS-C body it frames like 82-300mm, which gives you useful reach for wildlife and sport without a big spend. It works on APS-C bodies such as the Nikon D7500, and on full-frame bodies in crop mode.
Read the lens page for the full fit list before you buy.
Written by Claude from this site's pages.