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There are four packages listed: Windows 8 Professional Upgrade ($69), Windows 8 Pro Pack ($69, product key card only), Windows 8 OEM ($99) and Windows 8 Professional ($139), with the latter two being available in both 32- and 64-bit versions (for the same price). If you go into the product page, however, we can see that the original price for the upgrade and product key card only versions is listed as "$199" suggesting that this might either be a launch offer, or subject to change. Don't forget though, there's still the chance to upgrade for an even lower price, for those who qualify. You can officially reserve your copy of Pro from today for $69.99 at all the main retailers, but if you can hold back on that impulse purchase for just a little longer, you'll be able to upgrade to Pro online for $39 (until January 31st).
Continue reading @: Windows 8 packaging and pricing revealed: standard OEM $99, Pro Pack $139, pre-order from today -- Engadget