However, you can buy the license key for cheap from the portals mentioned above. If using a Windows 7 or 8 key works for activation, a digital license will be issued to you.
 
 

How to get Windows cheap (or even for free) | PCWorld – What Windows 10 Pro will cost

 
However, you can buy the license key for cheap from the portals mentioned above. Yes, you can get it from Microsoft Store. However, both these limitations are actually not much of a big deal. If you are a gamer who travels around, you might find yourself in a tight spot. One thing that I was hoping for some explanation on key activations, I have seen how some Youtuber’s have tied their windows 10 keys to their Microsoft account. If you are still on Windows 7 or 8, you can upgrade to Windows 10 for free. Because you can make a huge saving by buying a genuine Windows 10 or Microsoft Office from Keysbuff.

Windows 10 Genuine Lifetime License Only $12, Office $26, for Massive March Sale

 
I am writing another few.