Only if it costs the same number of perks as that nazi uber tank in that one thread a while ago. And it will not just cost you from bomber perks or fighter perks or attack perks. It will cost you from ALL your perk pools. And if you can't pay, then you go perkrupt. Meaning you can't use perk planes, you earn no perks and you have to pay by the bullet every time you fire your guns for 5 years.