Uh both. Breeders that created bloodlines. Google is your friend or just look on the classifieds here. I know that markus jayne has graziani pastels for sale or just get in touch with Graziani Reptiles. Look around and also make sure you have a correct setup if this is your first snake. Figure on spending $150-$200 for a CORRECT BP home on top of what you spend for the animal.
