This sounds like a "too good to be true" kind of situation to me. Co-ownership and the breeder retaining breeding rights is very common in purebred dogs, but it's almost never a situation where the breeder takes on ALL of the financial responsibilities. In the co-owned dogs that I've seen through the vet I work for, the owner who is not the breeder is the one responsible for paying for all of the vet bills and all of the health testing, and all of the class fees for training the dog, and all, or at least most, of the entry fees for showing the dog. When it is time to spay/neuter the dog, whether because they have had the number of litters that the breeder will allow or because it has been determined by the breeder that the dog is not worthy of breeding, then the non-breeder owner is the one who is usually responsible for paying for the surgery too.
As for spelling, on an online forum where there is little else to go on besides spelling and grammar to make a "first impression" yes, spelling is important. It shows a certain level of "education" so to speak. And when it comes to breeding dogs, which is a little bit of a touchy subject anyway thanks to the pet overpopulation issue, it gets even more important. I will admit, if someone can't even spell the name of their chosen breed properly I take that as a sign that they don't know that much about the breed. Because in my life experience, it's turned out to be true more often than not. If a breeder, or someone who is thinking about breeding, consistently misspells the name of their breed, in my personal experience it usually means that they may well love and adore their dogs but they are breeding either just to experience the cute puppies, or for money. Either of which is the wrong reason to breed a dog, and are huge contributing factors to the thousands of unwanted dogs euthanized in shelters every year.