Jonathan Stark is a thought leader / coach / writer / blogger etc that has been beating the drum on time-based pricing vs value-based pricing. He helps software engineers and others get off the time-based model and transition to value-based. Here's his website: https://jonathanstark.com/ Here are some interviews where he covers the topic https://www.youtube.com/watch?v=UT32G9wmONg https://www.youtube.com/watch?v=B1b7…
The dream is that you can deliver a project for 100 hour pricing in 10 hours of work, but usually value based pricing means you'll be spending 200 hours on something that was initially valued at a 100 hour level and there are no one to bill the OT to.