Pablo Escobar was a notorious Colombian drug lord who dealt cocaine exclusively. In 1989, Forbes estimated Escobar was worth $3 billion. Escobar himself described his business as bribing the right people.
At the height of his drug empire, Escobar's Medillin drug cartel was smuggling 15 tons of cocaine into the U.S. Per day. This was worth about half a billion dollars. According to Escobar's brother Roberto, at this time, the cartel was spending $2500 a month to wrap their stacks and stacks of cash.
Escobar, an extremely violent man, was eventually forced to give himself up. He was imprisoned in Colombia but continued to have influence in criminal activities. He was then extradited to the United States. Escobar eventually committed suicide.