[Aeolun]

On average, a boring approval wastes maybe 1 minute between the requester waiting and the approver opening whatever system they use for approval. Over 100 approvals, this is 100 minutes wasted.

At $100 per hour for a professional, you could save around $159 by using this service.

Seems like the pricing works out to me. You just have to figure out how much time is wasted in traditional approval and how much time this approval method saves the customers.