Trump's out of office, can we please stop spreading unfounded anti-Trump propaganda now?
He sold a $40m for $100m to a Russian oligarch, who promptly demolished it. The overpaying is the point.
Real estate is one of the primary means of laundering money out of a country that otherwise restricts it. See: FINCEN [0]
[0] https://www.fincen.gov/suspected-money-laundering-and-fraud-...