Safe method of financial transaction at sale time

We bought a coach from a private party. They banked at the same bank as us. I took some cash to them as they requested,and met them at the bank.Their bank had my bank wire the rest to their account. Their bank drafted a bill of sale and notarized it for us. We were both comfortable doing it this way. They had the title and signed it over to us and we went back to their place and drove it home.