A few years ago I was rang by a Producer for a picture my Sound Mixer and I had been asked to do being directed by Sydney Pollock (Havana), he asked me what the sound equipment was going to cost, and when I told him he thought it was a bit expensive but stuck to my guns and he agreed but not happy. A couple of weeks later he rang again asking what it be for extra gear ie sound playback machine/ earwigs with amps for dance scenes and some 2nd unit gear I told him no charge after a pause he said why's that I said its all incuded in the package, I had read the script and worked out what we would need and plenty of backup as we were in the Dom Republic
He never queried a thing after that and we ended the best of friends
Don