Unused Xbox Live codes can be purchased through Amazon or the official Microsoft store. Customers have the option of purchasing how long they would like the membership service, such as three months or 12 months.
According to Wikipedia, Xbox Live is an online multiplayer video game and media service from Microsoft. The service was first launched in 2002 and is available on a variety of devices, such as video game consoles and smartphones. Xbox Live is available in both a free and subscription service. Under the subscription service, known as Xbox Live Gold, customers are given two free digital games a month. Xbox Live Gold also gives customers exclusive member discounts on selected games. As of late 2012, the service has been made available in 41 countries.