Just how high can you get for $200,000? If you pony up the money to the good folks at Virgin Galactic, you'll reach an altitude of approximately 68 miles (110 kilometers) above the surface of the Earth.
That's 6.2 miles (10 kilometers) above a boundary known as the Kármán line, where by most definitions the atmosphere ends and outer space begins.
These dizzying, suborbital heights have typically remained the domain of experimental aircraft such as NASA's X-15, which only ascended beyond the Kármán line twice. Virgin Galactic, however, plans to offer regular flights there aboard SpaceShipTwo.
"The vehicles have been designed to go a little bit higher than that," says Stephen Attenborough, commercial director for Virgin Galactic. "We may at some point be able to offer a slightly increased altitude or higher apogee for the flight, but the physics will tell you that the higher you go, the higher the g-forces are going to be on the way up and the way down."
In other words, approximately 68 miles is a perfect cruising altitude not only because it places SpaceShipTwo firmly in space, but also because going any higher would make the flight too rigorous for some prospective passengers.