Not that I'm sharing this in a run-go-get-it sense. But some enterprising key recipients have chosen not to participate in the StarCraft II beta. Some 49 keys are being auctioned on eBay right now, with bids reaching up to $305.
*Well, almost every question, as the final StarCraft II: Wings of Liberty release date and the system specs required to play the StarCraft II multiplayer beta on PC are missing. But if you have other questions, Blizzard's FAQ has answers.