For students only, Microsoft Store offers downloads of Windows 8.1 Pro for $69.99. (You must be running Windows 7 to qualify. Windows 8 users can upgrade via the Windows Store.) Plus, you'll receive a coupon that cuts $25 off your next order at Microsoft Store. (It'll be automatically added to your cart.) Assuming you'll use the coupon, that's $25 under our January mention and $48 under the best price we could find for a download elsewhere. It features a new start-up screen; built-in SkyDrive; and more tile sizes, colors, & backgrounds.

This student-only discount requires verification of student status prior to purchase.