I am sorry, but your question and details are much too vague to give specific details.
• What area of the world will this be designed for, and in. Pricing is different around the world, not to mention different monetary systems.
• How extensive will the web site be. A handful of pages, several pages, or many (hundreds/thousands). The number of people involved to do large projects makes a difference.
• How involved will the web site be.
º º Graphic work.
º º Scripting.
º º Database accessing.
º º Programming.
º º Interactive.
º º Etc...
• Does the client know what they want. Or will this be more like an Ad Agency, where the client will not know what they will like until they see it designed (meaning it may have to be done several times).
• Will this be a one time shot, or an ongoing contract to maintain the web site after design and implementation.
You will be better off doing a Google search with specific keywords in your search criteria so that you can gather the information you desire.