You don't mention your site or experience you have, and neither do you give us any way of verifying that what you say is legitimate. And this is your first post. I'm sorry to be negative contributer but I'd really need to know a hell of a lot more about who you are and what you've achieved.
The thing is that the Netbuilder forum already has several members who are earning way more than you suggest is possible and they're providing support to the rest of us at no charge by answering our questions here. Sure your offer might be very competitive and maybe $50 a month is peanuts for the kind of income you're talking about but in fairness to members who would be interested I'd like to ask you to back up your statements with proof that we can verify independently.