How much would it cost to get Paul McCartney to perform in a stadium?
Depends on which stadium, and when.
Normally, he might get millions. But for his performance at the Olympic opening ceremony -- where he led the crowd in singing "Hey Jude" -- McCartney was paid one British pound. That's about a dollar and a half.
Organizers say other star performers who took part also essentially donated their time. The only reason for the token payment was to make the contracts binding.