“Hey, I run a business, something like this would probably cost X per year and I think I would have Y users. Which would mean I’d minimally have to charge Z to make this viable”

That’s not a good approach, because Y changes depending on the price point and X changes on what these Y customers would expect from the service.

The only variable that can be fixed here is “how much you are willing to pay”, so this is why I am asking it.