Some breeders may have adult males for sale, most of them won't part with normal females as they are involved in their breeding program. I know that Adam at 8ballpythons has adult males.

If you know where your babies came from (captive hatched, farmed, wild caught) it may help you make the decision on whether to get one from your store or from a breeder. Established, feeding, parasite free animals are ALWAYS a much better bet for a new keeper. Breeders can tell you this and most likely you would be getting a healthy feeding captive bred animal