I have to admit that this is a good question. My problem with it is I love snakes and to see a snake to be used as an unwanted feeder kind of bugs me, but couldn't this be said about people who love pet mice? I am not really sure how to answer your question, whether it would be right or wrong. I am sure that an adult king snake could eat a hatchling BP but I am not sure how I exactly feel about it. The thing is, by the time the normals are old enough to be sold, and by the time you figure they wont sell, they will be too big and feisty to feed to your king snakes. Also, quite a few breeders have told me that their normals tend to sell quickly as they are very cheap.

Maybe and hopefully someone else will have more of an input on the subject...