I got on Amazon and ordered two certified refurbished Dell PCs. I got two PCs with I5 processors, 8 GB of RAM with Windows 7 for $250 each. Since they were business machines, they were already setup for dual monitors. I didn’t care that Windows 7 isn’t supported because I only have radio stuff on them. Anyway, one day I checked the Microsoft website and was able to download and install Windows 10 - for free on both PCs. I assume it because they were commercial machines and had legit certs still on the drive.