I have bought 3 machines on e-bay.
A 301 which needed oil and lube and new footies and new rubber bobbin winder, then worked great.
A 301A sold cheap for parts because even tho the motor worked the seller could not get it to sew. It turned out that the bobbin was in backwards and the bobbin finger was not in the right place. Fixed that, oil and lube and works like a charm.
A 221 FW which I still have not had a chance to oil and lube, but came VERY WELL PACKED.