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Microsoft finally took the wraps off of its long-awaited Office for iPad suite this morning, only to reveal that most of its functions require a $99 subscription to the Office 365 service. Even though you can get a discounted subscription through Amazon, $70 may seem pretty steep. Rest assured, Microsoft is planning to offer free one-year subscriptions to the service tomorrow.

All you have to do to get your free subscription is show up at one of Microsoft’s retail stores with your iPad in hand. The first 50 people to do so will get the sub completely free of charge. Microsoft announced the promotion in a tweet earlier today:

This sure seems like a fairly effective way to get people into the store, even if they are carrying a competitor’s tablet and walking out without actually buying anything.