Elon Musk says that tickets to Mars will be able to buy themselves “almost anyone who wants to.” At the same time he mentions the conditional price of $100,000.
In a recent interview, Musk was asked about the price of such a trip. Musk said the price would be determined in part by economics, but also by the need to make travel to Mars affordable enough to attract the million or so people needed to build a city on Mars.
If it costs about $100,000 to move to Mars, I think almost anyone can work and save up and end up with $100,000 and be able to go to Mars if they want to. We want to make the price affordable for anyone who wants to go to Mars.
The source suggests that Musk implies selling the house and other property to people who are going to go to Mars and not come back. In the interview, Musk mentioned other possible sources of funding, such as government sponsorship or getting a loan.
In 2020, Musk said he hoped to build 1,000 SpaceX spacecraft within 10 years to send 1 million people to Mars to build a city by 2050. He later stated that the first man would set foot on the surface of Mars in 2029.