From Ilder Kira;

From what was written it was said we would get random nests from the vendor, so how can it be explained I got 9 troo's outa 9 nests bought?

ANSWER: Yes, the Dryad nests are completely randomly generated upon clicking a pillar to rezz a nest. There are some that are rarer than others, and less likely to appear, but it is completely by chance whether it happens on that "instance" or not. It seems like you had a stroke of really bad luck OR you should go to Vegas and play the slots because it's equally amazing to get 9 out of 9 the same! I'm both disappointed by that for you and impressed by that as well! ;)