Should add on, your costs shouldnt even be that high, dont have to pay for actors because a) they whore b) they want the work, maybe pay for a location if you cannot get one, may have to fork out for a sound guy and possibly an editor but alot of camera people double up as editors anyway so if you can find one who will work for free even better and most of the people you need have their own equipment anyway so it saves hiring it out unless you going for that high high quality picture i.e the red cam. At most the only thing that should cost you is refreshments and possibly peoples travel expenses.