Nope and we'll probably never know (unless we kidnap his accountant or something

)
But at $30 a pop. Lets say 4000 people have paid. Considering they say the have approximately "88,000" members, thats a good estimate (cause we all know that 40,000 of those guys are either trolls are ban).
So $30 x 4000 = $120,000.
But that money, ontop of the $$ he receives from advertising is a nice chunk of change. There are 7 advertisments on the front page alone. Two of them change in a rotation (offering more money cause you can have multiple companies on the front page). Then you have 3-4 advertisments on each review page (in a rotation). Then you have advertisments on the forums pages (rotation also).
I've kinda of wondered if he ever got any side money from companies also.
Does he write articles and do anything else? Obviously he's not hurting for money, but i'm just curious.