"A Third of People Would Sell Dope If It Was Legal ""Deliver Us From Evil"" director Matthew Cooke just released his latest documentary, ""How to Make Money Selling Drugs."" The documentary follows drug dealers, celebrities, and law enforcement to get a better understanding of the $400 billion drug industry — specifically, how and why people get involved in the industry, despite heavy penalties. But we wanted to know how much of the public would sell drugs if they were legal."