https://www.tomshardware.com/reviews/get-windows-10-free-or-cheap,5717.html https://www.tomshardware.com/reviews/get-windows-10-free-or-... https://www.kinguin

https://www.tomshardware.com/reviews/get-windows-10-free-or-cheap,5717.html https://www.tomshardware.com/reviews/get-windows-10-free-or-... https://www.kinguin.net/category/67756/windows-10-professional-online-activation-key https://www.kinguin.net/category/67756/windows-10-profession... Kinguin is one of the largest key reseller portals. It's a legal business. The catch is that some keys don't work and some of the sellers are unreliable. It's not illegal to sell Windows keys however, so Microsoft has been unable to shut down the reseller market (if they could they would, and they certainly have the financial & legal muscle to stop a site like Kinguin instantly if it were illegal). The Tom's Hardware link covers some of that ground. And note that if you buy a key from one of Kinguin's resellers, make sure you buy the online activation version of Windows (otherwise you'll end up on the phone with Microsoft and they'll have to assist you in activation, which they may or may not be inclined to do).