Lets see how much heat I catch for the following, I kinda feel like I am going on a pet rat forum and posting about raising feeders.
If I have normal males (yes this is my first year breeding so my luck I will have all normal males or nothing LOL) after a certain point of feeding them and not being able to sell them, feeding them off becomes a very real possibility. I see no difference in feeding off snakes vs feeding off rats, mices, hell even roaches, and mealworms. Everything I just mentioned was a living creature giving its life to sustain another life.
Anyway back on topic towards the OP original post. I do not believe there will be a raise in the cost of normals unless something really really drastic happens (disease tears through a bunch of breeders reducing the overall availability of normal ball pythons). There are too many coming out of Africa and the prices on morphs is low enough that even people just getting into breeding can start with morphs instead of normals.