I want to buy a license of windows on G2A, but should I trust it?

I have been wanting to buy a license for windows 8.1 in order to be able to upgrade to Windows 10, but I don't know if I should trust G2A, the reviews on the site aren't good at all. Most people couldn't activate or if they tried to deactivate and reactivate it would say that the key is invalid. What do you think? Have you used the site to buy something, especially a windows licence?

No. most of them are all scams.

On the Teksyndicate community, we are not allowing any key sells of any kind,
Also we are not allowing any linking to such kind of key sellers.

That's too bad. I thought they were worth a try, since Logan had suggested it (kind of). Guess I'll have to go buy one from Microsoft.

There have been a lot of keys revoked that have been bought from G2A. I'd personally stay far away from shady sites like that.

I only use it for their 10 steam games for 5 bucks cause so far ive pain 5 bucks and got over 50$ in games lol. Other than that id avoid it. Anything under 10$ is probably safe.