Urgent help with windows 10

[OnionRings]

Just built my PC, need a product key and fast, if I buy from here http://www.ncixus.com/products/?usaffiliateid=1000031504&sku=110478&vpn=KW9%2D00140&manufacture=Microsoft will I get the product key emailed to me? If not does anybody know where I can get a product key cheaper then the entire cd bundle and all, just the key, and have it emailed to me?

[Rienks]

This is DVD so this product key will be in the box, which will be shipped to you. 

[cpuwaiy]

goto kinguin.net.  It was shown on a youtube video,

[radical guild]

Or go to g2a.com I think they sell windows product keys

[SPAS-ID]

windows.com sell it i think ( digital key )

[OnionRings]

Yea g2a and windows both want 120$, I was hoping to get it a bit lower then that.