There is that stereotype of a nerd with the high pants and pocket protector and that kind of thing. That can sustain comedy for maybe a movie - hence the 'Revenge of the Nerds' franchise - but not for hopefully years on the air. It's a sight gag, not a story.
Mr. Wrigley believed in this: Put all your eggs in one basket and watch the basket. They don't do that today. This is the old-fashioned way I'm talking about. He carried it on to his business. Do one thing and stay with it.
So it is fair enough that you are paying me what I ask for, because it is my name you are using to sell the film. If the producer gives me a guarantee that he will sell the film at a lower price to the distributors, fair enough, then I will charge less!