If this place breeds ball pythons than they have a good idea on what things are going for in the market and price accordingly. For a pet store to make money they need to place a premium on things to account for overhead. With that said I would guarantee that those hets are all males. No breeder would sell het anything females that cheap. Have them give you sex guarantees on what you buy and if they won't believe me there are better prices on the classified websites out there. Good luck.