You asked
Is the ttartisan 17mm f 1 4 worth buying used?
Yes, I'd buy this one used. It's a manual-focus prime with no autofocus and no stabilisation, so there's less to wear out than on a lens with motors and electronics. Its f/1.4 is wide enough for low light and subject separation, and it fits a long list of mounts, from Sony E and Fujifilm X to Nikon Z, L-Mount and Micro Four Thirds. You can read the full specs and framing on the TTArtisan 17mm f/1.4 page.
Check the glass for scratches, fungus and haze, and test the focus ring for smoothness before you pay. For general tips on buying second-hand gear, see Buying used.
Written by Claude from this site's pages.