As others have already mentioned - you WILL lose money while you're raising up your babies to become breeders, and you probably won't turn a profit for many years. While you're raising up your "profitable" morph, the prices will drop each year. And there's no guarantee when you breed that you'll produce babies, or even that the babies will be the morph that you are breeding for (out of 10 lemon pastel eggs, I produced 2 lemon pastels and 8 normals my first season - one I held back, the other I traded for another animal).
Not only do you have the investment in the animals, caging, thermostats, incubator, you need to figure in feeding, veterinary care, marketing costs. If you're not someone that people know, it's going to be much harder to move your animals, than someone who people have seen and know and trust to buy their animals from. Doesn't mean you have to be a "big name", just means that people need to get to know you and see that you are reputable in your words and your actions.
I also see from your first post that you are 13 years old. You are also going to have a very difficult time finding people willing to enter into a non-binding contract with a minor (a sale is a contract - if anything goes wrong with an animal that they purchase from you, they have no legal recourse).