BetaNews writes, In early summer, Microsoft started offering a promotional price on Windows 8 Pro to anyone buying a PC running version 7. But there's a slip up. The $14.99 price is available to anyone willing to take advantage of the company. Several users have already tested this, ah, workaround and verified that it works. But don't expect the loophole to be open for long. However, Microsoft hasn't closed it yet, which I just verified for myself. To get started, head over to the Windows Upgrade Offer website and click the "Continue" button to begin the rather quick process. It's the next step where things...