Is the pentax smc da 14mm f 2 8 ed if worth buying used?

Here is what the site says about that.

From [Pentax smc DA 14mm f/2.8 ED [IF]: Pentax smc DA 14mm f/2.8 ED [IF]](/gear/lenses/pentax-smc-da-14mm-f-2-8-ed-if/): A prime lens by Pentax for APS-C cameras, 14mm f/2.8. Specs - Maker: Pentax - Focal length: 14mm (prime) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Pentax K - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Pentax K): like 21mm on full frame; f/2.8 gives about the depth of field of f/4.2 there. - On the larger-sensor bodies of Pentax K: ...

From [Pentax smc DA* 200mm f/2.8 ED [IF] SDM: Pentax smc DA* 200mm f/2.8 ED [IF] SDM](/gear/lenses/pentax-smc-da-200mm-f-2-8-ed-if-sdm/): A prime lens by Pentax for APS-C cameras, 200mm f/2.8.

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