Is Windows 10 pro upgrade free?

Related questions

1. Can 1366x768 display 1080p?
2. Can black wallpaper save battery?
3. Does dynamic background drain battery?
4. Why is my screen upside down Windows 10?
5. Do live wallpapers waste battery?
6. Is there a classic view in Windows 10?
7. Can you set a GIF as your background Windows 10?
8. Why is my wallpaper blurry on my phone?
9. How do I get animated wallpapers for Windows 10?
10. Does dynamic wallpaper kill?

Tags

1. #business
2. #charges
3. #using
4. #ultimate
5. #product
6. #preinstalled
7. #upgrade
8. #previous
9. #windows
10. #still
11. #edition