Want to Buy WTB 65mm or 50 mm RB C series or K/L series lens

Just got an RB 67 pro S and I’m already tired of trying to figure out these lenses on the bay with fungus, and haze being pretty evident then When it is not mentioned there is no mention of shutter condition. Then the prices are all over place.

Looking for a 50 or 65mm RB C or K/L series lens with no fungus, no haze and accurate shutter with no scratches in the glass.

pm sent