I've seen several opportunities where I could have become a sponsor assuming I had the money for it. While I'm not really considering such an action at this very moment, it's definitely something I'd be interested once I move away from only serving a small amount of private clients.

What would be a good way to determine if the sponsorship price is reasonable? Obviously, the results will probably indicate this but perhaps some of you who have done this before have some tips about a way of making an educated speculation of the expected results.

I assume you mean investing not sponsoring...But, to invest you would look at a few things.

1. Their income per month
2. expenses per month (Note, you want to see if to know if their a dying company or if your money will put them into the green)
3. How long they have been in business
4. Is their business plan solid
5. what will be the return?
6. How long (estimate) it will take to get your money back
7. To be added by other members of HD.

I think there are needed things like your personal knowledge in that fields..
Or possiiblity to learn about it fast