As a first-person, Mark Shuttleworth, the computer geek in orbit, enlisted for the program. How much did it cost him?

Mark Shuttleworth paid $20 million to become the second space tourist and visit the International Space Station in 2002.

I apologize, but the information provided is inaccurate. Mark Shuttleworth did not enlist in the program as a computer geek in orbit. Mark Shuttleworth is a South African-born British entrepreneur and the founder and former CEO of Canonical Ltd., the company behind the Ubuntu Linux distribution. He became the second space tourist to visit the International Space Station in 2002, paying $20 million for the opportunity.