NewEgg.com has the Microsoft newest operation system, Windows 8 Pro upgrade for $29.99 (199.99 – 130 instant savings – 40 MIR) with Free Shipping for a limited time. The $40 mail-in-rebate expires December 23, 2012.

If you currently have a personal computer running Windows 7, Windows XP or Windows Vista then you can upgrade to Windows 8 Pro (Professional). With Windows 8 Pro, you can connect and share your files. Windows 8 Pro also adds enhanced features if you need to connect to company networks, access remote files, encrypt sensitive data, and other more advanced tasks.

The Windows 8 Pro Pack enables you to move up to Windows 8 Pro from Windows 8 Standard. The Pro Pack makes your PC or tablet ready for business by adding prifessional-grade features like BitLocker for encrypting your data, SmartScreen, Remote Desktop, and Windows Media Center.

If you don’t need a physical copy, The Microsoff Store has Windows 8 Pro Operating System as a download for $39.99 for limited time.