Did you ask them about it? A few things ive heard have happened in situations like this. One, they know its a pastel, and when you point it out they tell you its really $300 or something like that. Or two... they let it slip

Also, it may not be wild. I have a friend who works at petco and they said they get all of their reptiles from a breeder ( Not flipper) somewhere in flordia who wholesales to a bunch of petcos. It would seem more likely thats how a pastel got into the bunch.

- Matt