What ticket price makes a Mars city likely?

“…if we can get the cost of moving to Mars to be roughly equivalent to a median house price in the U.S., which is around $200,000, then I think the probability of establishing a self-sustaining civilization is very high.”

— Elon Musk, 27 September 2016 · Watch: IAC 2016 — Making Humans a Multiplanetary Species · 8:31 ↗