uhh I do do that and other stuff and I only get $10 a week. And plus, my allowance got screwed from my parents having low money so I'm not getting my allowance D:. and I'm also saving up for otehr stuff and I have other games to play.. I can deal with it. I don't need Aces Fly High.. I have otehr games like, gmod, CS:S, etc. That are free for online..
You can download the offline training for free and practice in your spare time or until you can afford to pay the monthly rate. I'm not sure if you can download the offline missions if you aren't a paying member that's something I'll have to look in to.
All of that said before you actually sign up you NEED a joystick preferably a twisty one (for rudder control). Some people can fly with the keyboard and a mouse and there are tutorials on how to do that at the trainers portion of the site. Personally I'd rather disembowel myself with a dull spoon than try that.
I'm sure that there are other games out there that you can play but I doubt that any of them come close to the challenge, the camaraderie, and the community, that is here.
Best of luck to you and be glad you're not a Texan. They charge us extra