Since my original suspicion was confirmed:
"I know that The Political Machine 2008 is not yet available and i'm afraid that that the dream purchase was lumped in with it and it is being withheld until The Political Machine 2008 is available"
This issue is, hopefully, resolved.
To prevent others from making this mistake, don't purchase anything that's "pre-release" along with anything that you want now. Even if it is available now, Stardock sales "is not able to charge and fulfill only party of your order". (The quote is accurate.)