Is the canon rf 20 50mm f 4l is usm pz worth buying used?

Here is what the site says about that.

From Canon RF 20-50mm f/4L IS USM PZ: Canon RF 20-50mm f/4L IS USM PZ: A zoom lens by Canon for Full frame cameras, 20-50mm f/4. A full-frame video zoom with a built-in power zoom you can switch to manual. Specs - Maker: Canon - Focal length: 20-50mm (zoom) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: Canon RF - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Canon RF): as marked, 20-50mm. - On APS-C ...

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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