Judgments: How Much Do You Think They Make

So they say that you can't always judge a book by it's cover and this experiment kind of proves that saying to be true. What happens when a group of random people in various fields and from various walks of life meet and try to guess how much each other make simply by looking at them and asking one or two questions. From killers to weed shop owners the ending of this experiment might just shock you. 

Be honest have you done this before????