My border collie is mostly white with some small black spots. As I said earlier that my breeder said she had not produced a nearly all white border collie in 10 years. I saw the parents of my mostly white border collie. The male was a typical black and white border collie, the female was a light grey merle. I don't believe the photos of the male and female you posted would produce a white or nearly all white pup. I don't think they are telling you the truth. I would choose another breeder. I am not a breeder, but I have three Border Collies. I am new to the BC boards, but I would very interested in what a Senior Member who is a Border Collie Breeder has to say about that pairing.