I've been asked to do a simple commercial by a local car dealership. I'm not in the advertising business, and really have no qualifications, but they asked me to do it and I did. Since I'm not exactly qualified, how much do you think I should charge for it?

as a freelancer/no background! i think half of the professional price will be suited for you! but they are so clever! because it is so expensive for them to hire an advertising agncy to do the campaign! charge half of a pro's price! dont worry because at the end the credit is on you! if it does have good feedbacks then they'll get u again,that's the time that you can name your price!