So far, only encountered once where they split the shipment. The shipping costs would be at least $30 depending on the weight of the item.
Now, i will email the merchant everytime I send in an order, asking them to cancel any backordered item rather than to have split delivery. If i see something amiss, I sometimes even have to call them to ask them.
Of course, if the merchant does not entertain my request or read my email, then it is beyond my control. Guess there is always an element of risk here.
As for the box bag, I did not spree for this in my earlier batches. Only one mummy placed it recently so I am afraid I annot advise you on how high the shipping costs can go cos I have not seen the item personally.
But so far, the merchant is quite ok except for the one split delivery.