I believe it is free.
No. It's free to make an account.
No, if you did you should contact Apple.
Simply credit your iTunes account with the value you owe for the app, it should then automatically pay for the app. If it does not automatically deduct the amount owed, email apple and ask them to manually deduct it from your account.
Why should apple pay you anything?
None, but you may pay for a iTunes gift card, or put your credit card onto your account ( but you don't have to) Hope this helps :)
Absolutely free! Yay!
Steve Jobs salary from Apple is $1 (one dollar) per year.
Nothing, it is free. Awesome!
You must setup an Apple Account with your credit/debit card details. Then any apps you purchase using this account will be billed to your cred/debit card.
Changing the ID is easy. You just go to the Apple website and create a new Apple ID. When you have your new Apple account, you enter your credit card information to create a way to pay for your phone service. (Did you think it would be free to separate the phone from your parents account?) After you have set up your account and paid for your service, you can have the phone transferred to your account. Of course, you probably also will need your parents permission to transfer the phone from their account to yours.
approximately $500 million per annum
Not really because you have to create an apple account using your email address but you can't log into apple with your email account. :)