I've never used the pile of loot option before. I know pre-orders aren't charged until they arrive to BBTS and I know in-stock items get charged as they are added to the pile. What about shipping charges? Do they charge me for shipping when I ask for the pile to get shipped out to me or do they charge for shipping before? I'd like to add an in-stock item to my pile, but only have enough money on my card for the item itself, not enough for shipping.