They are quite pricey from a lot of breeders. Though as long as the breeder is good than it may be worth the extra money considering the dragons usually come from better known bloodlines, they've usually been handled and are use to human interaction, they've most likely been fed good top notch diets, and you'll know your new companions complete background history. Not to mention buying from a good breeder decreases the likelihood of parasites which is a huge issue in store bought dragons (trust me I know all too well ?)
I've herd really good things about dragons den especially if your interested in obtaining a dunner. And I think their prices are a little more reasonable compared to other high quality breeders you will find online.
Another breeder who will actually work with you and does payment plans is unlimited dragons.
And than there is excel dragons (I believe they have both a Instagram and fb page), Corona dragons, and remarkable dragons. All of these are pretty pricey but they do have some beautiful dragons.
Wishing you the best of luck during your search