I wouldn't even put that breeder on my "potential" list. I don't see any parents listed, no health testing listed or accomplishments/titles. They claim they have "20 years of expertise" in the breed?
I know in GA you can get a decent crop for about $400-$450 for an individual...... on that same note, there are some vets in GA that charge $650-$800 for an individual. Again (as already mentioned), it depends on the area.
With that said, I would recommend you continue your search for an ethical breeder. Yes what you will pay for a quality bred pup from an ethical breeder will be quite a bit more but you will likely save in vet bills later. The DPCA website is a great place to start searching (just keep in mind not all good breeders are listed, and just because they are listed doesn't mean they don't need to be checked out thoroughly).