At a discount, just like Turkey with USA F-16s.
Doubtful. The Gripen is the only fighter Hungary has. They are completely dependent on Sweden for their fighter/attack jets.
Turkey's "payoff" was getting the jets/upgrades at all, as they have been denied for years, leaving Turkey with an outdated fighter fleet compared to Iran and Greece. They desperately needed the Vipers and upgrades to their fleet of older F-16s. They are paying $23B. Unlike some of the countries we sell weapons to, Turkey gets essentially zero military aid from us. We halted military aid to both Turkey and Greece 25 years ago.