Really depends. It would have to be a killer design. Why would I pay for something that I could do/have done myself and the way i want?

Obviously if someone is designing the site, then there will be more of a markup if I either designed it or paid one of the designers that I use. Then I may still not be getting what I really want if I have no input in the design.

Now, if it has Google history, that maybe a different story.