We need someone whom is really current in their style of web design.
You will be focused on developing designs for all mobile devises and be focused on the latest style trends. Perhaps you are a graphic designer that moved into web design. You will need to know all about layer styles, shadowing and using masks.
We need someone that designs only. We dont want developers. Perhaps you have some of your designs on template sites such as "Theme Forest. This is the type of designer you will be.
The price you will be bidding for is for developing a website layout. A one page layout give a brief.