mmm no
wont tell ya
No, most jailbreak tools are free, however most good apps even on jailbreak app sites cost money. You can't use iTunes gift cards on these, but you can on the app store.
The App Store? Yes.
You cannot install this Beta unless you jailbreak your iPad. This Beta is only available to developers, and being sold illegally for hackers. If you jailbreak, you'll be locked out of the app store and alll the other updates that will come before it is released this fall. Be patient.
It allows you to get apps for free in the app store.
iPhones come locked, you are supposed to bring it to an AT&T store to get it unlocked. But, some people can jailbreak your iPhone so that you can use it without the phone feature.
Yes, you still can
No. You will have to jailbreak your iDevice.
You don't. You might be able to get a business loan, but you can't open a store without at least some money, and there will be a period when you're getting established that more money will be going out than coming in.
Yes from the app store unless you jailbreak
its the third party 'app store' for use with jailbreak
Yes, the cloud does have unlimited storage. There is not a limit to what you can store.