If I were in your shoes, I would not go.
First, is health. Please take some time tonight and research Golden health problems and the testing responsible breeders do to give their puppies better odds if escaping these known breed issues.
Here are some links to help get you started.
Canine Health Information Center: CHIC Information
Health Screenings for the Parents of a Litter - Golden Retriever Club of America
Improving the Odds for Obtaining a Healthy Golden Retriever Puppy - Golden Retriever Club of America
Orthopedic Foundation for Animals
Also I will include a visual learner friendly infographic and screenshots below.
This breeder is doing none of them. If they did it would show on thier AKC ad in parentheses after the parents names and on OFA. There is nothing. That is a lot of risk they want you to shoulder. Do not fall for the "we'll show you when you visit. That is a nasty way to try to get your heart to override your brain. It is hard to walk away from a cute puppy especially if you have kids with you. Ask them to send them now.
Next is price vs. value. The puppies are at least twice the price they should be. All Golden puppies are cute. Well bred, poorly bred, sick or healthy, all of them are cute. AKC registration is the only value they have to offer. All that means is they are AKC registrable, that is it. AKC is not an indication of health or quality. Health is as I mentioned measured in bulk by health certifications. Quality in some sort of competition. Though most families have no desire to have a 'show dog' most want a dog that meets the standard of the Golden Retriever and/or a dog that is train-able that is what titles prove. These puppies are priced on the pall bark of breeders who will have full verifiable health certifications for generations and dogs that have proven in competition that they are good examples of the breed. In a gross analogy, this pricing is like some one charging a new Lexus price for their use Kia.
Finally, most people who are after tens of hundreds of your dollars are going to be nice. Especially when they have a mediocre product they are peddling in the hopes of getting top dollar. Being nice and responsive have little to do with being a responsible breeder.
Do your research on health, ask for the certifications (that don't exist) and scrutinize their response. I'd guess a breeder like this will all of the sudden sold all their puppies, they will say they have them and will show you when you come (which will not be OFA certifications) or they will claim their dogs are magically healthy and have never had problems so they don't test.
If health is important to you run from these folks.
If your okay with risky health rescue or find a more reasonable cheap puppy on kijji.