[Question] EV of Tax Deductions Assistance

What do you think the EV would be to set up a not-for-profit that helps high impact charities increase their fundraising in a new market? I’m thinking the formula would be something like below, and am looking for help filling the blanks:

EV = (average donation $/​donor in a given country) * (# donors of in a given country) * (charity’s impact /​ $ received)

For more context, there’s a potential opportunity to set up something like this with law students in Montreal, Canada. This evaluation will help determine if it’d be worth the while! And no, no other organizations do this right now—at least, not with volunteer law students. That said, I know major organizations will probably want to hire major lawyers if they’re going to make a move into a new country. Only small to medium charities might take up an offer like this one.