Is the ttartisan 11mm f 2 8 fisheye worth buying used?

Here is what the site says about that.

From TTArtisan 11mm f/2.8 Fisheye: TTArtisan 11mm f/2.8 Fisheye: A prime lens by TTArtisan for Full frame cameras, 11mm f/2.8. Specs - Maker: TTArtisan - Focal length: 11mm (prime) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, Canon RF, L-Mount, Leica M, Canon EF, Nikon F - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, Canon RF, L-Mount, Leica M, ...

From Buying used: Buying used: Cameras and lenses are built to last, and many photographers upgrade often. That makes the used market one of the best ways to afford good gear. A body that's one or two generations old is often most of the camera for a fraction of the price.

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