I ripped on Flight Control last month when it was released at a price of $4.99. Apparently even Namco agreed with me as the price was quickly lowered to a much more competitive $2.99 and today it's the freebie of the day on the Amazon Appstore. Free is my kind of price especially when it's for the full version sans advertising.
I did play the game and it's got 5 air fields and plays well on my original Droid... it's the same as I remember on my iPod Touch (aka a great game!). I still wish it was the same price as on the iPhone, but there's certainly $3 worth of entertainment here if you haven't already burned out on this type of game.