"By (Elon) Musk’s admittedly loose estimates, buying yourself a single ticket to Mars right now (using non-existent tech) would probably cost around $10 billion. The same amount of cash could buy you a few square blocks in Midtown Manhattan. But once the so-called SpaceX Interplanetary Transport System is fully operational, he estimates that a person will be able to travel to the Red Planet for around $200,000, roughly the same as a two-bedroom in Madison, Wisconsin. The ITS—Musk says the name needs some workshopping—would accomplish these cost cuts primarily with lighter materials, stronger rockets, and reusable technology." https://www.wired.com/2016/09/elon-musk-colonize-mars/