By way of comparison, when Turkiye joined the JSF project, there was talk in 2000s that it would spend $14-18 billion on aircraft procurement, while in 2017, the then defense minister announced in his presentation to parliament that the total amount to be spent for 100 aircraft would be $25 billion.
Tbh, paying 25 billions for 100 F-35 (with full package) is way more worth it than paying 20 billions for 40 F16 and 79 upgrade kit. (With full package)