I can speak for the food blogging industry. This is my wife’s blog[1] A good food blogger focusing on the US/High GDP audience can get CPMs from $1-4[2]. Where it gets interesting are the RPM numbers. If you can manage multiple ad networks, execute 100% fill rates, bid between networks and become a preferred partner, you can rake up to $12-15in RPM [3]. Here’s more of multiple revenue sources for a successful blog [4…
> A good food blogger focusing on the US/High GDP audience can get CPMs from $1-4 You're taking a risk here. By mentioning this, a good fraction of the 300K Hacker News daily uniques will visit your site as I did, and some may be gourmands. Excellent uncluttered presentation and mouth-watering photography by the way. On the other hand, you tipped off the largest gathering of highly motivated, entrepreneurial web deve…
I expect OP enjoys and is knowledgeable about the subject. They are married (content and tech) so they get to pool results. If you paid someone who was passionate about it there will be turnover. If you do it on your own just for the money and you aren't passionate and knowledgeable the site will just suck.
It's not that easy to get visitors and if they are paying out like that then there is probably plenty of room for additional actors.