Example: Market size 150,000 or less on a yearly subscription model ($60 per year) for a total of $9 million annual revenue at most. Costs estimated to be less than 500,000 annually.
Likely best you look through docs on various VC Websites (there are many).
If you have a flow of investment (say for example in traffic) + a flow of sales, so there's a consistent ROI over some period of months, you'll attract far more capitol + have to give away less of your company.
Most VCs I know will be way more interested in consistent, proven ROI (even if total revenue is small), than estimates on paper.
