19 Jul 2017, 01:19

I guess it depends on your end goal. Do you want to be able to use those images later on to sell as prints? If so, make the licensing a set period of time. If you don't think you have much use for them anymore, charge more and let them have the licensing for as long as they like. I think 2 year license for $200 is reasonable for a small publishing thing like that.