Pricing depends on the area of the country as higher populations, rarity of the dog, cost of living, etc. will drive up the price. But in general, pure breds range from as little as $200 to as much as $2000. Given the breeds you want, you may be in the higher price range.
More important than price, though, is the breeder. Anyone can be some backyard breeder - the question is if they are good. Sometimes you might be willing to accept a dog that isn't "perfect" if you can meet the "family". For example, try to meet the breeder. Take a good look around the area. Forgive things like flies, as dogs attract them (due to their waste), but make sure that the area itself is clean, that the pups have plenty of food, room and fresh water, and that the pup's parents are healthy. That is, try to meet the parents. This will be a good clue to determine what your dog will look like. Then see if papers are available for the parents. Sometimes there are only papers for one dog and a "lineage" on another. If you want an AKC pup, both parents need papers - and that will cost more. If you just want a purebred, perhaps the "papers/lineage" route is possible (where one dog is not officially registered) as this will decrease the cost. Just note that unless the parents have papers, your pup cannot be registered.
I found three good dogs by "meeting the breeders" and fortunately, I haven't encountered any horror stories. Two of the dogs didn't have a parent registered, although a lineage was available. This did decrease the price and did not have an effect on the pup (one lived a very healthy life, sadly passing away at almost 14 years of age).
I should mention that the price of the pup is just the start of your expenses. First, you need vaccinations. Those start at about 6-8 weeks of age. Total vaccination costs are around $150. Then there's food, toys, bowl, bedding, etc. Obedience training can cost $500-2000, depending on how well trained you want your dog to be. Unless you plan to show this dog, please neuter or spay it. Do not have some dreams of "being a breeder". That is a TON of work and most likely will never happen - especially with rare breeds like you want. But if you neuter/spay your dog, you will decrease some "hyper" tendency, dramatically decrease the dog's desire to roam and will substantially decrease the chance of cancer later in life. Neutering is about $150 as well.
All of the above - vaccinations, obedience training, neutering, should be done within the first 7 months of the dog's life for best results. I really recommend obedience training - I learned as much as the pup. It has helped me control the pups a TON and has made me not only be a better owner, but helped me bond with them more.
Good luck and enjoy your new pup, whenever you get him/her!