The family of Robert Durst's first wife, who went missing in 1982 has filed a $100 million lawsuit against the real estate heir. In this article, we take a look at Robert Durst's net worth in 2020, total earnings, salary, and biography. Robert Durst is a American Criminal from Scarsdale, New York, USA. Robert Durst, the eccentric millionaire accused of multiple murders, comes from one of the richest families in New York.. Robert Durst worth $100 million, investigators say 1 / 21 Robert Durst leaves federal court in an Orleans Parish sheriff’s vehicle after his arraignment April 14 in New Orleans.