You ever wonder why the sun rises in the East and sets in the West ? .... WHY SHOULD YOU CARE ? smh . . . what kind of response is that .If I was in charge of production, all special orders would either go through the regular line in batches (in which case you'd have to wait), or be sent through a secondary facility (which would exist only if there was sufficient demand).
None of us here are likely to be able to tell you what they do at the place you're buying from. And other than maybe having to wait, I don't know why you should care.