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Rating Newest Oldest. Best Answer: Xbox Live time stacks up to 36 months worth. The only times they don't stack is in the cases of trial amounts, like 48-hour cards, or the free month offered to the first 3 new Xbox Live accounts made on a system. Source(s): Personal experience.
Full retail price of a 12 month subscription code is 59.99 USD, as the previous answer states. But, if you search around, you can actually always find them for cheaper online. With a quick Google search, the cheapest one I could find was here: http://www.cdkeys.com/xbox-live/...