I called 3 stores in my area (D.C) and none of them would tell me how many units they have. One even said they don't have them yet and don't know when they will get them. He was lying but the rest said they weren't allowed to tell you how many they have.
Living in a metro area what time do you think people will show up at the store. hour earlier, two?? I just don't think this is as well known as the iphone amongst the average, non-tech loving, joe.