Some costumers have very short deadlines and need their prints urgently. This happens especially with students. You should add an option for urgent order and give the possibility of charging an extra for orders delivered in a day or two.
We’ll be releasing support for urgent orders in the coming months
Well this shouldn't be decided by the customers themselves, I mean a customer should never force a Hub to stop everything and process his order first by paying such option when submitting the order.
Hubs have always the possibility to ask for extra money if they have spend extra time slicing and printing urgent orders
Michael Franchino commented
You have this ability to add charges to the order as you see fit. I do this for rush jobs all the time.