If you want quality, you have to pay for it. A good majority of NERDs snake's are very good quality and health, therefore you'll pay more through them than some breeders. It's kind of the difference between a $75 pastel and a $250 pastel. You'll see the big difference as they grow up. Some private breeders also charge higher prices for their morphs because of the quality. As with anything else, a better quality "product" will cost more. And the name brand sometimes has a pull on it too.