Stardock.com and Impulse both seem to think I'm not in the United States. In fact, I'm living in Rochester New York. When I try to buy the Space Rangers 2 expansion from the Stardock website, it says it's not available in my country. When I try to buy it from Impulse, I can add it to my cart, but the price is in Omani currency.
What the hell? I think the Stardock region identification system is broken.