Remember the BA AMEX Credit Card guys....with a £120 fee (free if you are a Platinum or Centurion) per annum you get to earn BA miles at 1.5 per £1 (GBP) spent and at 3 per £1 spent on BA products (fares, on board gifts etc).
The big present is when you have spent £15,000 on the card, you get a certificate entitling you to a companion ticket for tickets given for points encashment.
This is a UK product but I understand that the BA Visa is available in the USA.
Therefore, you cash points for a BA concorde ticket and get a second one free ! Can't say fairer than that....
I too want to go on Concorde this year - sometime during October....any new ideas about offers we can take advatage of for this year (teh *Wood IF one is obviously in the past now !
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Bond Boy