Is the sigma 65mm f 2 dg contemporary worth buying used?

Here is what the site says about that.

From Sigma 65mm f/2 DG Contemporary: Sigma 65mm f/2 DG Contemporary: A prime lens by Sigma for Full frame cameras, 65mm f/2. Specs - Maker: Sigma - Focal length: 65mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, L-Mount): as marked, 65mm. - On APS-C (Sony E, L-Mount): like 98mm on full frame; f/2 gives about the ...

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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