Thanks, Tober! -
Unpaid orders are not valid until paid in full in the next 48 hours.
If left unpaid the system will cancel the order automatically in 48 hours from the order.
I'm not sure about this statement about quantities/reservation. Let's say there are 100 available, I ordered but haven't paid yet. Does that mean that only 99 are left for pre-ordering for others and it's reserved for the next 48 hours for me? Or that it's not considered an order yet since I haven't paid?

Anyway, just paid Hopefully, I'll get it in January.