I need to quote a price for a portrait of a person for publication in an alumni magazine for a large, public university(20,000 students).

The subject will be in NYC and they want me to shoot him with a NYC backgrop. The Univ is not in NYC.

I was thinking anywhere from $400-700. What do you typically charge for these type of assignments. Should I vary the price based on usage(alumni contact just stated it would be printed in one of their publications) or just give them a base price?

Thanks.