The Microsoft Store has a limited time offer on a new contract-free AT&T Lumia 635 bundled with a 12-month Xbox Music Pass subscription. You can get the deal for just $99.90 until the end of the day today online and in select Microsoft Store retail locations.

Since a 12-month Xbox Music Pass subscription usually costs $99.90 on its own, this bundle deal means you basically get the AT&T Lumia 635 for free. The deal is Microsoft's way to celebrate the 57th annual Grammy Awards that are being held later tonight.

Source: Microsoft Store; Thanks to millerliteboy for the tip!

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