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The first charge is an authorization charge, and will drop off. The card will be charged for real when it is shipped.
 
the same thing has happened to me....it was charged once but then it dropped and then it appear one more time and then again it was dropped and it has not come back since monday.

I'm thinking they're just waiting to charge the card one final time when it ships friday.
 
Went through this yesterday. Now, they have charged me and taken my money when I woke up today.
 
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