Have you ever gone into a pet store and looked at their Ball Python's and seen a morph they didn't know they had, and do not know anything about morph's and were selling it like a normal Ball?

Here's why I ask in my local pet store in Gillette,WY the only one with reptiles(I plan to change that here soon) there is a axanthic, it's about two feet long not sure of sex he can't prob, but he's got it in a aquarium with two normals and want's the same price for it. Do I take advantage of the situation or inform him that he might be able to get more money. The snake has no other color except black and white no brown or yellow, and he want's about 100.00 for it. Do I jump on it and buy it?