With a credit card or a Playstation Network card you buy at a retail store that sells Video Games
Nope its absoloutely free but you have to have wi-fi.
No only the Playstation Network is free you mist pay for the internet
Almost as much as if you did not trade in a PS2
You pay with your Playstation Wallet Money after you have logged into your account and before you can download the game
No you do not need to pay for Playstation Home.
No the PlayStation Network PSN is free you must pay for your internet service provider and there will be no additional charges from PlayStation
No, PlayStation 3 has free online services.
250 quid
Every year I think
no! unfortunatly but only if playstation pay xbox for it!
Nowhere that you will only pay retail it was released long ago
You can not play PlayStation 3 games on a PlayStation 1, but you can play PlayStation 1 games on a PlayStation 3. All of the PlayStation consoles are backwards compatible.