Production cost of air units

Fighter
Generation zero: 50,000 air production cost
Generation one: 100,000 air production cost
Generation two: 200,000 air production cost
Generation three: 400,000 air production cost
Generation four: 800,000 air production cost

Close air support

Generation zero: 75,000 air production cost
Generation one: 150,000 air production cost
Generation two: 300,000 air production cost
Generation three: 600,000 air production cost
Generation four: 1,200,000 air production cost

Bomber

Generation zero: 100,000 air production cost
Generation one: 200,000 air production cost
Generation two: 400,000 air production cost
Generation three: 800,000 air production cost
Generation four: 1,600,000 air production cost

Multirole fighter
Generation five: 800,000 air production cost
Generation six: 1,600,00 air production cost
Generation seven: 3,200,000 air production cost
Generation eight: 6,400,000 air production cost
Generation nine: 12,800,000 air production cost
Generation ten: 25,600,00 air production cost

Strikebomber
Generation five: 1,600,000 air production cost
Generation six: 3,200,000 air production cost
Generation seven: 6,400,000 air production cost
Generation eight: 12,800,000 air production cost
Generation nine: 25,600,000 air production cost
Generation ten: 51,200,000 air production cost