How much will tickets cost?

The leaders in commercial space tourism already claim they have a market to support the industry. While Jeff Bezos hinted the price would eventually come down — as eventually happened with the high prices of the nascent airline industry — for now, ticket prices are in the low hundreds of thousands, at least for Virgin Galactic. 

That price point would keep spaceflight out of reach for most of humanity, but there are enough interested rich people that space tourism seems to be economically feasible.