Well it seems that all we've got so far is 6 sets, 3 Black\Gold\Gold and 3 Black\Red|Gold.
I recall Ralph saying a few years ago, when I purchased my 1st set, that he needed at least 10 orders before doing a run. He then makes a few extra and puts them in stock. So it appears that at least since Feb 05 only six orders have been placed.
I strongly suggest that anyone who will need decals within the next few years place their order now otherwise you may never get them. If you leave them in the box in a room temp dry location they will last at least 10 years.