My e-mail to them:

Can I suggest something to you? Maybe you should ask the normal asking price on this puppy as you do all the others, and incourage your buyer to donate the thousands more to the shelters who take care of the thousands of dogs that die every day because there is not enough space, money, time, or food for them. Please, do consider it. So many lives would be saved with such a gracious donation.

-TS