Feel bad, but not guilty

Last year I sold a 65 mustang fastback to a guy at a car show. He called me the other day and we talked then he mentioned that he sold it for $6000 more than I got for it. Had a nice 67 California pickup and one of the local Chrysler guys came over to “buy it” but could not understand how to navigate DMV. Told me if I would get the title in his name he would buy it. Sold it to a guy in Australia. Always take pictures and understand laws. You are NOT always dealing with honest people!!!