body: Windows 10 (pro, enterprise, any) that supposedly have never been activated so far are (re) sold online for 5$-20$. I assume that those are key that have initially been given out by microsoft in volumes or in countries with lower pricing (as the price is around 200$ when bought directly from microsoft).
  
  
  Is it legal to resell Windows license keys? Are there any kinds of Windows 10 pro/enterprise keys for which it is forbidden to resell them?
  
  
  
title: Is resale of Windows 10 keys legal?