Imagine I'm starting a photography project with a duration of at least several weeks. I'm trying to estimate a fixed cost for the whole project.
As part of this project I'll have to build trust with indigenous people local to the Central American country I'm living in, before any actual photography takes place.
This trust building is likely to take considerable time, but doesn't directly involve photography or post-processing, so I'm a bit stuck on how to charge for this.
Overall I don't have much inexperience estimating project costs.