Even if you are a Microsoft/Windows fan... why buy them at all?
Windows 9 is going to be released quite soon. And I doubt you can upgrade the OS on these bargain devices.
In conclusion, nothing more than another desperation move by Microsoft to grow its abysmal market share (Windows 8 and Bing) to keep shareholders happy. A similar thing is happening with Windows phones... less focus on the premium, top-of-the-line flagship phones and more on the budget phones.
The only useful thing from Microsoft (Office) has been ported over to iOS and Android... so why would you still want Windows?