$120 to get Windows 8.1
If you already have Windows 8 installed on your PC, Windows 8.1 will be a free upgrade in the Windows Store. (But if you own a Windows 8 PC, you probably already knew that.) Now, Microsoft has revealed pricing for people who plan on installing Windows 8.1 on a system that currently runs some older version of Windows (i.e., Win 7). If you're just now making the switch (was it the return of the Start button that sold you?) you can expect to pay $120 for Windows 8.1 and $200 for Windows 8.1 Pro.
So I am pretty sure now that Windows 7 will have been the last version of Windows I will ever buy. I'm glad that I still have some discs around my house.