We bought a Genuine Windows 10 from Kinguin at S$32

Since the past 12 months, we have purchased two copies of Windows 10 Home Edition, one copy of Microsoft Office 2016 Student Edition and one copy of Microsoft Office 2016 Home Edition. They have been working flawlessly, and I even managed to get the Microsoft team live chat support when I needed help to re-format my computer to install a fresh copy of Windows 10.