Unless you buy it as a het, there is no way to tell if or what it is het for. Pastels and several other morphs are co-dominant, so there are no hets for them. Co-doms are actually visual hets for a super form, so it's either a pastel or it's not. If you are thinking about possibly breeding at some point down the road, there are several morphs or hets you can get that are about what you are looking to spend. You can most likely find a male pastel or yellowbelly (het for ivory) for around $100 - $150, and male hets for albinos and ghosts for $75 or less, and even males het for clown and piebald are down to $150 - $200. I also would be very concerned about buying an animal off of CL, especially since you are new. I would definitely wait until the local show and spend that time looking into the vendors and the kind of ball python you want to get.