They say Tito isn't trained enough. They've flown two politicians and innumerable monkeys into space, so you have to wonder what the fuss is really about. What's important now, though, is that we finally have a demand curve for space tourism. To plot our curve, we simply draw a straight line between these two points. This enables us to calculate expected revenue as the cost of going into space declines with improving technology.
Total revenue is equal to the ticket cost times the number of tourists.
Going from Point A to Point B in one jump is unlikely. Companies are unlikely to spend a billion dollars or more on risky rocket technology for a market that seems fanciful. For example, consider the old Mercury space capsule, which put a single astronaut into orbit and weighed three thousand pounds. With a Proton booster, payload cost into orbit is just two thousand dollars per pound, so the entire capsule could be placed into orbit for just two million dollars. According to the graph, with tickets costing only two million dollars each, several hundred people are willing to go into space.