Today, Amazon launched a new service allowing customers to purchase Xbox Live Arcade games through their store. Instead of purchasing an actual game, customers are paying for redeemable game codes which they have to enter into their 360 to download the game.
Mega Man 9 is among the lot, retailing for its regular XBLA price of $10.00 USD. Same game, different method of obtaining it.
Read more about the new service at Joystiq.