If I wanted to try all the Fly Now missions, having to buy the required aircraft could get costly.
thanks
Think of it as purchasing addons - the game is set up with all missions/planes as AI for compatibility, etc. So if you buy a plane, it doesn't have to be downloaded separately, it just unlocks, and away you fly.
If you're buying a number together, they have packages available, with a substantial discount.
Or just buy one or two - very cheap compared to FSX, and you can explode stuff! I'm sure there's people who haven't flown anything else since the Gotha came out...