OEM edition. Under MS terms it can only be provided with a system and not sold direct to end user just as a key. It’s also possible it’s a less than legitimate key taken from MSDN, Technet etc and the key might become invalid within a few months.
Though plenty of legitimate places have sold OEM editions (with CD) by using a loophole that require you to buy some cheap kit like a mouse.
However looking at that site I wouldn’t trust it to provide a genuine key.
Still, they claim:
“Are your items genuine?
Yes. We only sell genuine products. We are a UK LTD company (company no: 10599124) – and with every sale, we guarantee authenticity.”
Only been incorporated this year. Which is odd as references to the site come up going back a few years.
http://www.tomshardware.co.uk/answers/id-2833314/buying-windows-ultimate-key.html
https://forums.hexus.net/software/350009-softwaregeeks-too-good-true.html
[Help] Is Buying an OEM Windows 10 Copy Safe/Legit? from Windows10
Interestingly the registered address also houses about 10,000 other companies!
You can register your company there for £39 also. https://www.rapidformations.co.uk/additional-services/london-registered-office/
Ideal for scam sites 😉
At the very least if legit-ish, being OEM edition it will get tied to the first piece of hardware it’s installed on, so won’t be transferrable and can also be an issue if you change a major piece of hardware (motherboard for example).
