I use Trustedtechteam at work for Windows server and SQL licensing and don't have any plans to go_anywhere_ else.

This was the best price I could find on a LEGAL Windows 10 key anywhere. I found various sites that had keys available for as low as $20 but didn't see anything that indicated they were a Microsoft partner. I had no intention of making a purchase that, in weeks or months, would cause an issue in windows and tell me that my product key was no longer valid. I'm paying for peace of mind and I get that with Trustedtechteam.