Windows 10: Soon to be system building company, what Windows 10 key can I use on the systems?

Hello,

I'm planning a system building company around gaming and workstation PCs in Portugal, it will only be used to sell complete systems, no part selling or anything like that.
I was wondering if I can just use OEM keys you find online form third-party sellers sometimes around 1-2€ or do I need to use a complete Retail key for the amount over 100€. I see other technology shops here that make some systems not including Windows 10 automatically on them and only including it if the client wants to pay an extra 130-150€. Is that the only way to include Windows 10 on the computers?
Can't I just use a normal OEM key, maybe even OEM keys bought directly from Microsoft? I ask this cause there is this very popular system seller in the US called Maingear and they automatically include Windows 10 OEM on every PC, which is very strange to me because no one here does it..
Could someone clarify how can I proceed?

Best regards,
Diogo

:)

 

New System build Suggestions

just another build suggestion to consider- System Builder

 

Windows 10 RTM/Build 10240 now available for Insiders

Insiders in the fast and slow rings are now being distributed the latest Windows 10 RTM (build 10240).

http://blogs.windows.com/bloggingwi...-for-windows-insiders-in-fast-and-slow-rings/

But for those wanting to expedite the upgrade, and/or download the latest build in iso form, it can be downloaded for free from the following link.

http://getintopc.com/softwares/oper...-pro-build-10240-iso-32-64-bit-free-download/

Don't forget to check out the activation steps found here:

Spoiler slmgr /ipk W269N-WFGWX-YVC9B-4J6C9-T83GX
slmgr /skms kms.xspace.in
slmgr /ato

Windows 10 Enterprise - NPPR9-FWDCX-D2C8J-H872K-2YT43B8YKP-D69TJ
Windows 10 Home - TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
Windows 10 Professional - W269N-WFGWX-YVC9B-4J6C9-T83GX

use the key you need for the build and run those lines in cmd to activate

activation
I suggest running those commands as administrator. Just in case.

Enjoy!

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.