I don't remember seeing many adult morphs for sale, and very few adult normal females.
Keep in mind, just because you get adults doesn't mean that they'll breed for you this fall - sometimes they still need a good year or two to acclimate enough to be receptive to breeding.
I recall someone posted here that their experience was with adults, it sometimes took two years before the females would breed, almost as long as buying a baby and raising them up themselves.
Having not experienced this myself, so I'm not certain how common this is, but I do recall Greg Graziani also stating that adult females will often go "off" when moved, and that those you raise yourself generally do better on one of his Reptile Radio shows.