I purchased the Shadows of the Empire LSB in the in-game store; it charged my card, said the purchase was successful. It gave me none of the contents of the bundle, but instead 3 characters I already had at higher levels with no relation to the Shadows LSB.
I double checked that I'd selected the right bundle before purchasing, and the Shadows LSB was gone from the store afterwards. It has since then shown back up in my store but I'm hesitant to try again in case it does the same thing. Besides, I already spent the money and got absolutely nothing usable in return.