Is the zeiss distagon t 15mm f 2 8 zm worth buying used?

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From Zeiss Distagon T* 15mm f/2.8 ZM: Zeiss Distagon T* 15mm f/2.8 ZM: A prime lens by Zeiss for Full frame cameras, 15mm f/2.8. Specs - Maker: Zeiss - Focal length: 15mm (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, 15mm. Cameras it fits - Leica M9: Full frame - Leica M9-P: Full frame - [Leica ...

From Zeiss Distagon T* 35mm f/1.4 ZM: Zeiss Distagon T* 35mm f/1.4 ZM: A prime lens by Zeiss for Full frame cameras, 35mm f/1.4.

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