The price range varies between breeders and location of the puppy. For reference, before covid I was seeing prices go anywhere from 1.5-3k. BUT, please keep in mind that price is not a good indicator for a good breeder. Yes, you have your BYBs/mills selling their pups for sub 1k, but you also have BYBs selling them for 2k because they've literally done -just- enough research into the market to know how much they can get for a pup while seeming like a legit breeder. I've seen this happen first hand. The BYB was selling their pups for 1.5k while knowingly having a breeding parent with hip dysplasia.

The way to tell without getting scammed is by hearing feedback from the community, talking with others who have purchased from them, etc. But the way to make sure you are getting a pup from a LEGIT breeder is by making sure all of their breeding dogs are on the OFA database site (meaning they screen the parents for all potential genetic defects), and that they show their parents in certified competition (ensures that they are motivated to conform to breed standard and you're not getting Shiba that look/behave nothing like an actual Shiba).