Is the voigtl nder heliar 40mm f 2 8 aspherical worth buying used?

Here is what the site says about that.

From Voigtländer Heliar 40mm f/2.8 Aspherical: Voigtländer Heliar 40mm f/2.8 Aspherical: A prime lens by Voigtländer for Full frame cameras, 40mm f/2.8. Specs - Maker: Voigtländer - Focal length: 40mm (prime) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Leica M - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Leica M): as marked, 40mm. Cameras it fits - Leica M9: Full frame - Leica M9-P: Full frame - [Leica ...

From Voigtländer Ultra Wide-Heliar 12mm f/5.6 Aspherical III: Voigtländer Ultra Wide-Heliar 12mm f/5.6 Aspherical III: A prime lens by Voigtländer for Full frame cameras, 12mm f/5.6. Discontinued, but common used.

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