The final suit we see in avengers endgame, Mk LXXXV, how much did it cost for tony stark to create that suit?

It had nano tech, power to hang with demi gods, multiple arc reactors to power it, holographic shields, energy weapons, its leaps and bounds superior to his main trilogy suits, and those cost a fortune each.

Bonus: how much would it sell for?
How much is ironman’s mark 85 armor worth?