Stupid Petsmart. However, once you get the items I can explain a little more 
Where I am it costs about $2K+ for a dog from a breeder for just about any breed. Goldens may be less because the litters are so large. That may seem like a lot, but, as Debra mentions, dogs cost money to care for. After vet bills and boarding fees and food, it matters little what the dog cost to acquire.
Leaving true puppy mills out of the discussion, given the costs of being a responsible breeder -- testing, vet bills, feeding -- and how much work breeding is, I can't imagine anyone doing it for the money.
That leads to two problems for people looking for dogs. One is that since breeding isn't really lucrative, there aren't a ton of breeders, which means the supply of pups is low. Second is that most Basenji breeders want to place their pups in the best possible homes -- remember they aren't doing it for the money -- which means they're looking for people who have had Basenjis before. Something of a Catch-22.
