This is my fee if you want me to turn your general plot into a usuable script.    You give me the general outline for who these characters are, what needs to be happen, the main plot points, and how many pages you would like the script to be.    I'll stay in touch with you with any notes I might have until we finally agree on the final project.    I charge $8 per scripted page, plus credit as the story scripter, with yourself credited as the plotter.