How exactly does the queueing system work ? You add discs to it and order them by priority, right ?
So, say my plan lets me have three discs at home at any time. The top two in my list are available so they send them, but the third isn't. Do they send the fourth or just not send me anything until I manually move a disc that is in stock up the list in to third place or my original third choice comes in to stock ?