Commenters repeatedly warn that these are expensive to bring to standard: full coupe restorations are pegged at a minimum of $50k and V8 project cars can reach $150k-$200k all-in. The recurring caution is that money invested can exceed the car's ceiling value, though targeted spend on interior and wood can pay back.
Restoration economics and the recommissioning math
Mercedes-Benz W111 Coupe / Cabriolet · ownership