Well, to walk through some numbers..
Assume an eCPM of $8 (I think that is good performance, but still a "safe" number to work from). For perspective, I write about personal finance and tend to get a few more dollars than that.
Work backwards from there.
To make $100,000, at an eCPM of $8, you will need: 12,500 thousand impressions, OR 12,500,000 impressions. If each visitor has 10 pageviews, you need 1,250,000 visits. So, each month, you need to get 104,167 visitors.
Of that $100,000, how much goes towards costs?
Just a thought exercise!
