Why do I call it a meaningless question?
1) I reported at the start that the income was negligible. Why would anyone want to spend time studying a technique which produces negligible results--except to learn what not to do?
2) Do you actually expect someone to report real income numbers? Even income tax collectors know most people lie on their taxes -- and the biggest liars get appointed to government positions by Obama

To use technical terms, there is a 'response bias' to puff up income number because I might want to show off how good I am or how good I want you to think I am (called 'demand characteristics'). There is an extremely high likelihood that the income numbers people report are fake.
3) One number reported by one person in an undefined set has no meaning and cannot rationally be compared to anything else. If I made $20, for instance, in no way does that mean you too will make $20 or $19.95 or $0. I have taught statistics in undergrad and grad school. We call this n=1. One would be irresponsible to draw general conclusions from n=1.
4) My previous post scratches the surface of the conditions/variables which are operating and which I left undefined. If six (to pick a number) variables are undefined, how can you compare my results with anything else?