30 for them is a good price, i work at one and their normally 80. We're selling em like hot cakes. Make sure they're eating though, we have couple in the back (nfs) that refuse to eat.
I worked for a perco for a while and they were not the greatest. Really check for mites and make sure they are feeding. I would really consider going to a reputable breeder. You can get a normal for the same price.
Dont buy from petco, go and look on kingsnake for one
I refuse to buy anything from petco let alone any petstore as most of the animals they sell are WC and most people give horrible advice about housing and feeding most reptiles they sell. Go to a breeder as they actually care about the animals and at least some of them are not in it for the money, they will answer all your questions truthfully and help you if needed.