would you spend $2000 on a puppy?
I asked DP would he have allowed me to pay $2K for our girl and his response was the same as mine - she is priceless.
I could talk all night about the joy she has brought to our lives (including the holes and initial destroying of plants and clothes on the line).
I would pay $2K for a doggie and I would also rehome a rescue doggie. It depends what you're looking for.
In finding a breeder, we went to dog shows and spoke to various breeders and viewed their dogs. It was the best experience in understanding the breed and the breeders. From this there is one breeder I wouldn't buy from given her attitude (so rude and of the opinion she is the best).
Our breeder took the time to understand our lifestyle and picked our girl from the litter, based on the personality of our old girl (very dominant). We also viewed the parents and was explained the family history (titles and breeding lines).
We have invested many hours in training her from puppy school to obidence school.
The only thing I would ensure (as mentioned by LuLu) is having vet checks and certificates for any known problems for larger breeds (hips etc).
All the best in finding a new addition to your family.