Exactly right. On all of my sites, the cost are minimum.
I make back my production costs in ONE MONTH of clip store sales. The rest is gravy.
I only concern myself with BUYING, QUALITY, CONVERTING traffic. So it is low volume, high return. I get it through minimal costs, like CS $29.95 a month. I do not buy links, or banners, or pay for anything.
I do not have a ton of affiliates, so I do not have to give away 50% of my profit. Nor do I need to bang in their credit cards, or upsell them to remain in business. I can treat the customer like a king since I am still making a PROFIT easily.
So my monthly recurring EXPENSE is the server(s). The rest is PROFIT. My overhead is very low, and there is a lot of revenue streams to monetize content. Since my 1st RELEASE clip stores pay for the month's content. The rest is all for me.
It can be done, and you can make money in adult. You have to run it like a business, and think like a business. Which most do not. They treat it like a hobby, or beer money, and that is what they make.
