Yes you should expect to spend more. Pricing on biewers can vary a great deal depending on what it is you seek...show/breeding or pet. Females are typically more than males. Youwould have to determine what is reasonable for you. I've seen pricing from $1500 to $4000.00. The lower amount being a male and generally not within the standard for the breed. They may be bigger or a bite is off etc.
The biewer breed club of america has a lot of info available on their website.
Biewer Breed Club of America Inc. BBCA
A couple of Canadian breeders I would highly recommend who would be willing to help you in your quest.
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