Is it worth buying a used 70-200 f4 L (NON IS Edition)

This is a super lens..! Sharp, color, contrast, AF speed very good, light as compared to 2.8 version. Good for macro. I use a Nikon 5T or 6T (or stacked)  2 element diopter filter (no longer made) with 70-200 F4 L non IS on 60D.

All photos shown done with 70-200 F4 L non IS on 60D

Foggy