I have Microsoft Product Keys for Windows 7, 8, Office, and Visio.
Windows 7 Professional - 7 keys
Windows 7 Ultimate - 8 keys
Office 2013/2013 - 10 Keys
Visio - 10 Keys
Windows 8 - 12 Keys
Your Windows 8 would be eligible for the 8.1 upgrade, anyone attempting to sell you a Win8 Key that does not update is most likely a fraud key. For those of you without the pirated copy of windows, burn the .ISO to a flash drive/disk and use the keys provided.
I have Microsoft Product Keys for Windows 7, 8, Office, and Visio.