Microsoft announced on its official blog the price to upgrade to Windows 8 Pro would increase from $40 to $200 starting from February 1.According to the data released by Microsoft at the CES conference, since on sales in October last year, 60 million copies of Windows 8 licenses are sold, but they did not disclose the specific amount of activation. In order to attract users to upgrade to Windows 8, Microsoft set the upgrade fee to $39.99.Microsoft said that the price would change as follows from February 1:Windows 8 Pro upgrade price of $199.99Windows 8 upgrade version price of $119.99Windows ...