If the limit is really 9 packs....in the future, if demand is going to be as high as the last few buys have looked like, might I suggest an alternative of at selling boxes as a standalone product, rather than ordering 12 3-packs?
Might be worth making a poll over, or at least going over your data of how many people ordered more than 12 3-packs of RtR or Gatecrash to judge interest for such a buy.
Met1Maybe they just didn't order enough quantity to keep up with the number of buyers? I personally like the 3-pack distribution, as I'm not going to be ordering any more than half a box