As a future cocker owner of an unborn pup. Here is what I would expect of the breeder. I would expect the dogs to be AKC registered, and have all health clearances, eyes, hips and ears I would expect the line of dogs being bred from to have solid temperments, I would expect that the breeder would be able to place a pup in our hands in good faith knowing that they have done everything on their part to ensure a healthy, stable pup. Also if for some reason we did have some unforseen problems that the breeder would help us through them. In return we would promise to train to the pup, make it part of the family, keep up with immunizations, give him excercise and keep him at an appropriate weight,keep his coat and ears clean and get him groomed on a regular basis. We would also keep in contact with the breeder and let them know how their pup is doing throughout his life.
That said there may be unregistered cockers that are great pets and dogs. But I think if someone offered me one tommorow as much as I want one I would say no and wait for one that is registered and I knew the background of the parents, grandparents, etc.....