We've always stayed near the luxury tax, so I do not think our budget is even close to limitless. I also think Henry would not mind paying the tax but not going so far over that other non-monetary penalties are obtained, IF we didn't also have to pay Castillo and Craig "off the books".
Paying Castill, Craig AND a luxury tax is probably just too much for even a multi-billionaire.
Also, billionaires got to be billionaires by pinching pennies and dollars, so certainly over $10 million is not something Henry just shrugs away.