Get your deposit back and run, run, run.
Anyone that would have 3 dog pregnant at the same time..is not a COE breeder.
Are these dogs from Germany?? Any breeder that talks about "German" Rotties, is usually a BYB.
Just because they have been doing this for 30 years does not mean they have been doing it right!
What titles have the females got on them? Did you see the hips, elbow eye and heart certifications on the OFA website for any of these dogs??
Not sure how this "breeder" could say all of their puppies are show quality???
Have you read on the Breeding Forum all of the stickies?
Seems to me that you have more research to do on what a good breeder is. Length of time breeding, and a fancy website does not make a good breeder.
Gina