I did look up the
Concorde . There were only 20 made and only 14 actually in service: 2 were prototypes, 2 were pre-production models and 2 'first off the line' production models; 5 are on display and the 6th will be.
Of the 14, British Airways owned 7. AirFrance has 5 plus one that crashed and one that was retired for parts in the 80s.
When I looked, there was no private equivalent to the Concorde. The
Aerion won't be available until 2014 at the cost of a cool 80 mil...
Popular Mechanics says 100 mil, but doesn't give a delivery date. The
QSST could be ready in 2013. That seems like a lot of money - even for Lex... though the current list has Warren Buffet at 62B, Carlos Slim Helu at 60B and Bill Gates at 58B so I guess 100 mil might be like me buying a bag of MnMs...
Carol