From here on it actually went alot easier, I paid with paypal and about 1hrs i recieved my key in email, and about 5 mins later a download link for the ISO file.
I decided to give it a try, found the cheapest ever copy, put the copy in cart and started the checkout. So I somehow ended up on san-kom but it seemed a bit, well, not reliable?. I was looking for a Windows 10 Education Product Key copy, and from experience I've come to understand that buying online is actually a lot cheaper than for instance in my local store.
I'd like to give a strong recommendation for ( ) for Microsoft keys and software.