Does antibody know landinkeys.com to buy licence OEM?

I've always used keyfans to buy window licenses but now I was looking for Office licenses and I found a landinkeys.com page that sells them at a very cheap price of $5 and up to $2.

those prices already give me small suspicions, however I am willing to take the risk to try, but I saw that they sell volume licenses and as far as I know, those licenses are only sold on the official Windows or Office pages and that is where I had more doubt. Will this page be safe?