BBTS does a "Pile of Loot" system, and anything you order/preorder goes into it, unless you opt not to.
You pay for the item, and the shipping cost for that particular item (had it been shipped alone anyway), and it goes into the pile.
You can continually add to it, still paying shipping for each item, so that when you decide to ship, the shipping cost is already paid for (I'm not sure if they refund you a portion if you pay too much shipping, since it would then be combined).
If you still have stuff in your "Pile" 180 days after it is added, it just automatically ships, to avoid it from just clogging up the warehouse xx
http://www.bigbadtoystore.com/bbts/c...aspx?content=4