Well, this is a most suitable topic for my century post !!
I was sent an info package about a staff deal on BA about 6 months ago. From memory it was nz$2200 to fly New York / London on concorde. The deal was one way, I cant remember if it included a flight back on an 'ordinary aircraft'. It might take me a few days to drag it up. But it suddenly seems like it might be worth it. I will post the details if I can.
I still regret not taking one of our last 742 flights into Kai tak...