How much would someone need? He should own a home or two. Somewhere to live and somewhere else to pay $400 a week.
I think people are over estimating his earnings. He would have earned Max 200k pa for the first 2 years.
Take away 3% for agent fees and 30% in taxes. If he is lucky he has a property with a decent amount of equity in it, I doubt he earned enough to own property outright unless he was a choir boy who didn't spend his money on travel, drugs and being an idiot.