People can buy a Windows 7 or 8.1 key for $5 or $6 and install that edition. Then immediately upgrade to Windows 10 for free from USB created by Microsoft's Windows' Media Creator Tool so I do not understand why Windows 10 licenses are more money. Just a little more time with less outlay for BTC for the same result. Once the computer is upgraded to Windows 10 the computer is licensed for life (can even do a new clean install on it after the upgrade).