I was contacted by a "promoter" representing a model I have worked with previously. I was hired by her friend some months ago to take photos of her to get her into modeling. Now I was contacted by her promoter (a different man) to be the photographer for a calendar they're printing for her. They plan to print 1,500-2,000 calendars, and each photo for each month will be a different theme, so they plan this to be a two-day photo shoot. They will be "promoting" me on the calendar and at an event they are hosting for the release of the calendar where they expect about 300 people to attend.
How should I go about calculating my price for this? It will be a two day photo shoot and I will be editing and giving to them 14-15 photos with a print release. 1,500-2,000 calendars with the photos I take will be printed. I will not be renting a studio, it will be outdoors and I already have all the equipment, and my assistant is free (he's my BF and always helps me with model photo shoots lol).
Any advice is appreciated! I really want to do this, I feel it will also be beneficial to me aside from the payment, the experience I will gain & possible exposure.