You asked
Is the nikon af p dx 10 20mm f 4 5 5 6g vr worth buying used?
Yes, I think it's a good candidate for a used buy. The lens is already cheap and light, and it's a sensible ultra-wide for APS-C Nikon bodies. It's stabilised and autofocuses, and on APS-C it frames roughly like 15-30mm on full frame. I'd rather not guess at used prices, since I don't have current figures, so check what sellers are asking against the new price.
Buying used is one of the best ways to afford good gear, and lenses hold up well to age. Check the front and rear elements for scratches or haze, and make sure the zoom and autofocus feel smooth. If you're also buying a used body, budget for a new battery.
Read more in buying used, and see the full Nikon AF-P DX 10-20mm f/4.5-5.6G VR page for the cameras it fits.
Written by Claude from this site's pages.