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Microsoft has an ongoing launch offer / upgrade offer for existing users of Windows 7 to upgrade to Windows 8 for INR 2,000 (~USD $50). This can be availed via the Windows 8 Upgrade Advisor app.
Here's my question- If I opt to purchase the upgrade, do I also need to install it immediately or will I be given a product key that I can use at a later time? I believe this upgrade offer is time-bound and will be valid up to some time in JAN 2013.
The time limitation is only for the purchase of the upgrade. After they have your money and you have an order receipt, there is no more time limit. – allquixotic – 2012-11-04T06:20:52.433