When France orders Rafales, its cost is 52,5 m€ for a F3C version, VAT not included. As simple as that. Anyone can check.
Because the French state has already paid the R&D, the stocks of spare, the simulators, etc, etc.
So every € above those 52.5m are extra costs or bonuses even though it's normal that export of today help to pay the R&D of tomorow.
That's always the confusion between program costs and fly away costs, it could be understable with the Canard who jump to quickly on a subject they don't master but comming from Jackonimo or anything related with Eurofighter it smells the BS.
Anyway Dassault is a private company and everybody know well that the Dassault familly are that kind of people who love to lose money on deals...