A copy of Windows 10 Home will run $119, while Windows 10 Pro will cost $199. For those who wish to upgrade from the Home edition to the Pro edition, a Windows 10 Pro Pack will cost $99.You can now reserve your free copy of Windows 10, if you meet the necessary requirements.Screenshot by Lance Whitney/CNET.hat means if you had Windows 7 Home, you get Windows 10 Home. If you had Windows 8.1 Pro, you get Windows 10 Pro. See here for more details. For more information on how to check your upgrade eligibility and reserve your upgrade for the July 29 rollout, check out CNET's guide.