There is definitely a need for better technology for start-ups in this space.
Having said this, I don't know what this product does from the website.
We pay ~$80 a month for 2 users to a financial planning application that integrates with our accounts (Xero) and it works well. Our revenue is 7 digits annually.
As a start-up founder, I appreciate what you're trying to do with your model but I kind of like, you know, just knowing the fixed costs regardless of our revenue.