good luck with him, I agree with what Jean said and then some
I think every puppy / dog deserves a good home, but coming from a puppy mill/producer, I can't justify giving them 650$ (or any bucks), when I could be spending 10 times that amount in vet costs, or maybe not, but not a chance I'm willing to take.
Altho, I do have to admit, a couple years ago, a young man came into my work place with the most beautiful 12 week old black gsd , of course I had to know where he came from, turns out the Amish
...but you know what? IF he had said you want this dog right now? I would have taken him, gorgeous, good temperament, health unknown..just to add I wouldn't have paid for him tho.