I'm not entirely sure how detailed you want the storyboard to be, and how many panels you exactly require, so the budget and time I've set reflects a certain amount of effort that may go into creating them — something we can always negotiate on.
However, if you like my art and believe that my skills fit the job, then I'll be happy to assist you.
For the payment, I'll be happy to make pseudo-clean sketches, cel-shaded, colored in shades of grey, with minimal backgrounds (if necessary). I will also provide you variations on gestures for characters in each panel to describe the the story you have in mind.