It should cost $20M and be free for anyone with a net worth under $20M, with the caveat that anyone with a net worth over $20M must pay a surcharge of $100 Quadrillion in some inflation proof assets (I have to do work instead of hyperfocus on this further). If they can’t pay it, too bad.
Fare from Mars back to Earth should always be free.
It should cost $20M and be free for anyone with a net worth under $20M, with the caveat that anyone with a net worth over $20M must pay a surcharge of $100 Quadrillion in some inflation proof assets (I have to do work instead of hyperfocus on this further). If they can’t pay it, too bad.