I could have sworn we've just gone over this, but ok...
FS2000 has a tentative release date of October 20, 1999.
Price for Regular Version is $59.99 (online stores are charging as little as $47)
Price for Professional Version is $79.99
Head over to the following address:
to see AVI's, photos, and all sorts of info on FS2000.
And to clear things up, Airport 2000 IS NOT a standalone program. It's an addon to FS98, creating several airports into highly detailed airports with static/dynamic aircraft and insides of terminals.
Head in the clouds... yet feet planted firmly on the ground.