I'd like to see a part two to this that helps me implement this into my business. Most of my customers are pre-programmed to equate trading time for money. I have a fixed fee for my design services but I break it down into hourly so it's easier for my customers to get their head around. I also use a sliding scale depending on how difficult I think it's going to be to please the customer. e.g. is the design being approved by one person or by a committee.