I dont think that logic really carries on this site. If the average punter goes once a week at approx 300 bucks thats a touch under 16k for a year. That would be after tax income (maybe the exception being Ahlungor as i imagine kick backs are paid in cash) and i would also assume disposable income as i dont think people would skip meals etc to punt.
Disposable income of that level would suggest at least an average but more than likely above average income for punters commenting on the site.