Is the canon rf s 3 9mm f 3 5 stm dual fisheye worth buying used?

Here is what the site says about that.

From Canon RF-S 3.9mm f/3.5 STM Dual Fisheye: Canon RF-S 3.9mm f/3.5 STM Dual Fisheye: A prime lens by Canon for APS-C cameras, 3.9mm f/3.5. A twin-lens 3D VR lens for APS-C bodies, with autofocus. Specs - Maker: Canon - Focal length: 3.9mm (prime) - Maximum aperture: f/3.5 - Made for: APS-C sensors - Mounts: Canon RF - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Canon) (Canon RF): like 6.2mm on full frame; f/3.5 gives about the depth of field ...

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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