The cost to adopt a Cairn Terrier from a rescue organization or animal shelter typically ranges from $100 to $500. The average price range for a Cairn Terrier puppy from a reputable breeder in the United States can range from $800 to $3,000 or more. 

The easiest way to adopt a Cairn Terrier is through a breed-specific rescue organization that specializes in Cairn Terriers. A great place to start is creating a breed search on Adopt a Pet. The search will show you all the available Cairn Terriers in your area.