It might help to know that there is typiclly a design step and there is a slicing step. Former yields a pixel-perfect Photoshop sketch of the UI flow, and slici

It might help to know that there is typiclly a design step and there is a slicing step. Former yields a pixel-perfect Photoshop sketch of the UI flow, and slicing is what converts it to the actual CSS/JS/HTML. You may try and check if divorcing these steps by using a designer for one and a dedicated slicing service for second (there is a lot of them out there) - if this would help reducing the cost. For middle-tier designers, design students and affordably priced wannabes have a look at Forrst. That's the core of their user base and they have also recently launched a job mediation service.