A person in the frame changes everything
Casting, styling, direction and scheduling move to our side of the table. What stays constant is the colour: the product on the model matches the product in the catalogue, because both come out of the same room.
Say it early
Models change the maths
Casting and agency time, styling, hair and make-up, and a schedule that cannot slip a day without a re-booking — a model shoot moves more budget than any other line in the brief. Flag it in the first message and the quote will survive contact with reality.