Is the olympus m zuiko 8mm f 1 8 fisheye pro worth buying used?

Here is what the site says about that.

From Olympus M.Zuiko 8mm f/1.8 Fisheye PRO: Olympus M.Zuiko 8mm f/1.8 Fisheye PRO: A prime lens by Olympus for Micro Four Thirds cameras, 8mm f/1.8. A weather-sealed f/1.8 fisheye. Specs - Maker: Olympus - Focal length: 8mm (prime) - Maximum aperture: f/1.8 - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: no - Autofocus: yes What it frames like - On Micro Four Thirds (Micro Four Thirds): like 16mm on full frame; f/1.8 gives about the depth of ...

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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