Just so you're aware, you are losing sales by imposing such a strict sale limit, especially since you didn't enforce it from the start. I know personally I'd be interesting in ordering multiple boxes, but I am not willing to go through the effort just for 9 packs.
Completely agree. It was even more of a fail for me, I found this and was willing to buy a full box back when you could, but there was no delivery option for the UK. I contacted them and after a day they made the UK an option, and then removed the option to buy more than 9 packs. Ah well, what can you do? Hopefully next time they get delivery sorted from the start.