Game was Good... but not buying it
I'm sure you put a lot of effort in this game, and you do deserve to earn with it... But not like this. You see, your game was pretty good, but not that good as to be bought. In fact, very few flash-based games have succeeded like this.
Instead, there are other ways to make profit of your game, maybe put some Ads in the preloader or inside the game sometimes, i'm sure can make a lot of money with ads, because your game is good, you do deserve it, but I think i talk for everyone when I tell you noone (or very few peopler) are really going to buy it.
Make it an ad-supported game, and if your game really get popular, you might as well make a Console version, maybe wii-ware or something.
But the way it is now, I find it very difficult for you to make any money with it like that.