I usually do portrait sessions for families and was recently asked to do a shoot for someone photographic a new clothing line for a catalogue and media kit. We would be shooting about 6 skirts on a model. I need 2 good shots of each skirt. I'm assuming this will take me 4-5 hours. I have NO idea how to charge for this. I usually charge a $250 session fee which is for 60-90 minute photo shoot and then the customer can purchase prints or a digital negatives on a CD. I need advice on how to charge for this.