なんで米国側が承認した16.5億ドルから突然25億ドルに上がったのか？

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チヌークの購入分も入ってました（斬新な結末）


>>The Defense Security Cooperation Agency (DSCA) has approved two separate Commonwealth government requests to purchase heavy armoured combat systems,
and Boeing-built CH-47F Chinook helicopters for a total of approximately US$2 billion ($2.5 billion).

Defence procures $2.5bn in AFVs, CH-47F Chinooks - Defence Connect

ttps://www.defenceconnect.com.au/land-amphibious/7974-defence-procures-2-5bn-in-afvs-ch-47f-chinooks