How do you price your work?
Going right for the dirty word: Money! I have been asked to facilitate a one-day event. I will need additional information to understand what is required, what type of event it is, how they want it run and so on. My question is simply: how do you estimate how to price your work? Days of preparation + delivery? Organization's size? How big the audience is? I'd be interested in knowing how others approach it. (I usually added up delivery + preparation, but I tend to massively underestimate the prep and the associated time. Are there other parameters you consider?)