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Question is, are the development cost for the twin seater included in the $5.4 billion, what kind of upgrades Brazil wants, that Sweden might not. What additional cost will the lease of Gripen C/Ds add as a stopgap. How much will the development of the Sea Gripen cost Brazil, what will be the final cost of the Gripen E anyway (procurement and per hour) since it's also under development only.
I think Sea Gripen should not be taken into account.
Additionally the full developmental cost is always shared and Brazil will 100% not be taking 100% of the R&D cost.