Is Keysbundle a Fake Microsoft Software Windows and Office Store?

The website Keysbundle located at keysbundle.com, which claims to sell Microsoft Windows, Office other software license keys is a fake. The keys they are selling for Microsoft Windows and Office software are ridiculously low compared to what they are selling for on Microsoft's website. And, the keys will only work for a short period because Microsoft will deactivate them once they have detected them as invalid.