We initially signed up for 21 aircraft, we are getting 9. So there are 12 (ish) aircraft sets of spares sat around gathering dust somewhere ready for use!
Mind you, if you are an aircraft parts manufacturer, are you really interested in a long term contract to supply spares for a 9 aircraft fleet. I had heard that the Typhoon world (IPT) has already had to buy a lifetime supply of one particular spare, as they were soon to become no longer available!!!