Users running Windows XP, Windows Vista or Windows 7 will be able to download an upgrade to their OS to Windows 8 Pro for US$39.99 in 131 markets once the new Windows OS version becomes available, ...

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One of the many things about Windows 8 which is new is its pricing. When Microsoft released the operating-system upgrade in October, it let PC owners upgrade to Windows 8 Pro for $39.99 — a much, much ...