Client pays for result, but not expences
You pay not for time I spent, but for product you get!
I prefer fixed price rather than hourly rate in my work! I choose stability and reliable background between me and my clients. I do not care about short-term profit, but care about as complete as possible satisfaction of client needs. You know, the best advertising for me a lot of glad customers! You pay not for time I spent, but for product you get!