They look more like a referral list than anything. Their location in Lancaster, PA does not give me a good feeling though-heart of puppymill country. Just reading the (very very short) blurbs on the puppies, not a place I would go to find a well-bred pet:
"This golden retriever puppy is AKC registered, up to date on shots and wormer and is health guaranteed. The father is hip certified. Please contact the breeder to either set up an appointment to see this puppy or to reserve him."
Nothing about elbows, eyes or heart checks for the father and nothing at all about the mother.
I would check with one of the GRCA puppy referrals:
www.lakesyde.com (the website is not up to date but call her up and talk to her. All the dogs have all the clearances and they are involved in showing their dogs) They are in Ohio but near the PA border