It's an official AMD page stating the price will be approximately $300. If it said approximately $200 or approximately $400 we would have different information. What about this is so hard to grasp?
No, what is actually revealed is the "approximate retail value":
AMD officially reveals "approximate retail value" of its "AMD FX-series eight-core processors": $300
The link you provided says nothing about confirming the price we are going to see at Newegg or any other supplier of material relevance.
And if you don't believe there is a difference, that the words of choice were judiciously selected to mean one thing while actually stating something else, then I've got a processor here to sell you that gets 50% more