Forbes' analysis of the other Supreme Court justices estimates that Samuel Alito is worth $10 million. Sonia Sotomayor is worth $5 million. Elena Kagan is worth $4 million. Neil Gorsuch is worth $8 million. Brett Kavanaugh is worth $2 million. Amy Coney Barrett is worth $4 million. Ketanji Brown Jackson is worth $2 million. And Chief Justice John Roberts is worth $25 million.