Kudos to you for holding out for CB pets.

While you may be willing to pay a premium, the majority of breeders do not seem to be inclined to make that investment of time and effort. There is an expense for the person raising such specimens, and no guarantee that the animals would sell, given the competition.

If you haven't already, contact herp societies and reptile rescues. Adopting displaced animals or unwanted pets may be a viable alternative for you from an ethical standpoint.

Good luck!