> No clients care if you spent 80 hours a week not solving their problem, so why would they care if you spent 20 solving it?
This has not been my experience at all. It's a different subject entirely, but it is very common for clients to be much happier to pay for 20 days at $550 a day than 5 days at $2,200 a day, even if they got it two weeks earlier. People are not rational.