If you mean a subscription card then no you dont need to purchase one. The only time you need to purchase one is when you want to upgrade your account to a Gold Subscription. You can also do this via Xbox Console.
This question does not make sense.
You Need a JTAG Xbox360 - You Can buy One from Ebayy
Purchase a router to allow connection of multiple item to a single internet line.
One can purchase the cheapest Xbox360 at Tech Bargains, Amazon, eBay, Penny Arcade, Big W, Tech Land, Best Buy, Cash Generator, Console Prices, Price Me and many others.
you have to buy Microsoft points on your xbox360 then you go to dashboard and buy them
Xbox 360 controllers can range in price based on what you are looking for. One can purchase a standard one for $7 online or one could purchase a wireless one for $10 online. If you wanted to you can buy them at Game Stop in your town but they will cost anywhere from $15-$50 depending on what you are looking for.
No, they won't fit in it for one, nor is the xbox360 able to 'read' them.
A new one is about $300.
one fifty
PS4
The game Fight Night Round 3 is available on a number of platforms. One can purchase the game for their XBOX360, their PlayStation 3, or their Nintendo Wii.