Pre / Post-war User Contax - not sensible ?

I have been pondering .
In comparison to a Kiev II or IIa , a pre-war Contax is old , with limited used spares and ex[pensive to repair / service .
The post war Contax may be somewhat more elegant , but is both more expensive with a similar cost to repair etc .
A 1950s Kiev can economically be repaired / CLA by OLeg providing years of sterling service .
Many have confirmed that an early Kiev is the equal of a Contax . My sole Kiev IIa was Ј60 , virtually mint . Even my CLA 1951 KII [ later lens ] was just Ј140 which is silly price for the quality of this kind .

The problem is that early '50 Kiev are rather expensive now, so expensive I rather buy a post-war Contax instead.