I've seen some morphs at Petco but not at Petsmart. I've also noticed Petco seems to have more morphs of corn snakes too. I bought a snow motley corn snake there (my first corn before I knew better) and she turned out to be a she!

However, there's a local shop near me that has a clown, ivory, and a butterbee. However, they are on consignment and way overpriced. Oh well.