Well, actually, you might consider that the order might ORIGINATE with the requirement for a smallish order of ULR airframes to do East Coast Aus direct Europe / East Coast USA.
The company that achieves it would most likely be the winner of a larger order that INCLUDES a 350-400 seater to replace the 747/380 into the future. So a desire for 12 aircraft might turn into an order for 20 to 30.