You asked
Is the nikon af s 105mm f 1 4e ed worth buying used?
Yes, I'd say it's a good candidate for buying used. Good lenses hold their value far better than bodies, so a used copy is one of the easier ways to get serious glass for less. The buying used page explains why.
It's a 105mm f/1.4 prime with autofocus. It isn't stabilised, so it leans on fast shutter speeds. On a full frame body like the Nikon D750 or Nikon D850, it frames as a true 105mm. On an APS-C body like the Nikon D7500, it behaves like roughly 158mm.
I can't speak to current prices or the condition of any particular copy, so check those before you buy. Full details are on the Nikon AF-S 105mm f/1.4E ED page.
Written by Claude from this site's pages.