You only need to buy Xbox live if you want to play online.
You can buy used Xbox Accessories online at video-games.shop.ebay.com. ANother good website is www.psreporter.com/microsoft_xbox.html
It is cheaper to buy online when they have specials. If not, it is cheaper to buy in stores. You will also not have your credit card number put in a suspect system such as xbox.
Online
yes you can by buy it online from the market place
the RC-XD is usable in Local mode without Xbox Live you just need to get 3 killstreaks but if you want to play online you need Xbox Live and you need to buy the killstreak
you can either buy a xbox live subscription from a video store (blockbuster, EB games, Gamestop, rogers etc.) Or buy it online through your xbox with the use of your credit card...
Join Xbox live. its for free. But you'll have to buy a membership to play online.
Sure! You can buy car insurance for Louisiana online at www.geico.com.
If you have a Xbox live Gamer profile, you can just recover it on the new Xbox. If you are not online, you will need to buy a transfer cable.
Usually at game stop or online sites.
You can buy a car from any car dealer or online from various cars websites.