I have raised purebred dogs for 20+ years.
I understand someone misspelling my breed, but when they do, I know that they probably have not researched enough to be a good prospect to get one of my dogs. A person has to know enough about the breed, have enough contacts about it, and have a reasonable understanding of it to understand what they need to do as an owner.
I am reluctant to sell to a person who hasn't done enough research to spell the name right. That being said, I have co-owned animals, and it seldom works well. The "owner" or person who thinks they are, doesn't want to give time to the breeder on a dog. This creates a problem for both, and I've seen lawsuits over it. One woman got a dog and didn't think it was good enough to breed (according to one of the breeder's competitors) though the agreement was that the breeder could use the dog. They fought and fought over the dog for YEARS. The one keeping the dog finally went and spayed her, and the breeder sued. It was ugly, mean and resulted in a lot of bad feelings. Of course, the contact came into play, and the "owner" ended up losing a lot of money.
Unless you're really willing to allow your animal to be taken from you for a week (for a dog) and 2 months for a female (I won't use the proper term here as it offends the untrained), then do not agree. And with a male, you will have to be sure he doesn't breed any neighbor females. With a female, you could have a lot of callers, and she could get bred. It is a bad experience then, and the breeder will be rightly angry at you.
I would never, never recommend a person who wants a purebred to get a shelter dog. I took that recommendation, and the shelter dog killed all my chickens and then proceeded to chew up the inside of my house, tear up things outside, and taught my other dogs to jump the fence. He slept in my son's bedroom (I got him for my son), and while my son was asleep, the dog ripped the carpet up. The carpet was glued down on the concrete floor, but he managed to rip up a large strip in the few hours from when my son went to bed (about midnight) until I was up at 6 a.m. He also refused to be house trained, and when my son fell asleep one night, I got up to about eight piles of poop in the family room.
Also, having raised GSDs, I would highly recommend that you check them out before you get one. You see this ideal, beautiful animal (and they are), but two of mine chewed up my goat (she didn't die, they were just playing). She didn't think it was fun, and within six months, she was nearly white from the stress of what happened. They are the breed that is cited for most dog bites. They are active, and although they want to herd, they are seldom good herders if they are not trained. They are not great dogs if you don't spend a lot of time with them in the first two years. If you do spend a lot of them with them in the first two years (i.e. have them at your side like the Monks of New Skete), then you will have a dog that is worth its weight in gold but only if you buy from a quality breeder who certifies and makes sure temperament is good.
Also, I would also never purchase a dog that I could not meet and see the mother (and probaby the father). I would never purchase a large breed dog that didn't have parents with hips certified and probably elbows (that's another story). I would also check into the breed to see what other problems that conscientious breeders are testing for, and if you pay a lot (for me, that's more than $500), I would want the parents to be certified. And you need to actually "see" the certifications because some people are liars.
My friend who raises GSDs charges $5,000 for a quality puppy. They are top quality dogs, and he is very careful about what he breeds and keeps. Yes, he does sell them. The lesser quality puppies go for about $1500, and a few for less than a thousand.
Dogs are a huge investment in money, then time, and everything else. I do not consider myself snooty about my breed, but I will tell you that I would never, never, never again get a dog from the shelter. If you have only that dog and you have enough time to train it (i.e. you dont' work away from home and have time during the day), you could be fine. But I was not, and it was a WIDE eye opening experience for me. You do not know the parentage (could have been an accident), and the shelters lie about parentage to people so they can place the dogs. I don't blame them (because they are trying to save a life), but I took this same dog I mentioned above back to the shelter after he wouldn't let my neighbors out of their house (I lived on a farm and they were two football fields away), because I realized he wasn't for me. When this dog had killed ALL of my cats, the shelter people wrote "Doesnt' like cats." I told her that the dog KILLED all my cats. She said he'd be placed better if she didn't say that. This was a very, very sweet dog, but he was extremely needy, and he could never be left alone, he could not be kenneled, and he could not be tied or fenced in either. Great disposition.
Yes, I do discriminate when a person can't spell the name of the breed they want. I know a person like this has very likely done no research. If they have done some research, they likely don't pay attention--after contacting several breeders and writing back to them, they should notice that the breed's spelling is a certain way. A person that doesn't pay attention to details is likely not going to be a good person to sell a breeder to, and they are also not going to be a good person to allow to have my line i.e. use my dog with their female.
Would I breed one of my males to a female that didn't have hips or elbows certified? No I don't. I also want eyes, heart and health certified. If a person were to come to me to ask me to use my dog, I would tell them that they could not if they did not have certifications. And if they came to me with a marginal female that they got from "someone" who breeds, I would not consider it. I don't need my male to produce defects that make people think he is the result of the defects. A marginal quality female is going to do nothing for my male's reputation, and she might hurt him a lot by the poor quality of her offspring. I would never consider letting someone use my dog to "breed up" the quality of their female. They needed to pay for a quality female in the first place. Too many dogs in the world to breed marginal quality.
I have known many quality breeders in my life. I have known many more that would sell you anything just to get your money and get rid of a dog. Be wise.
Don't breed marginal quality animals even if they have papers. Papers mean nothing except that the parentage is purebred (if the breeder was not a liar--and there are a LOT of those in the dog world). Purebred means nothing more than what the hatcheries tell you--they could represent the breed, but it is more than commonly "papered" dogs are not quality any more than hatchery chicks are show quality. If you didn't pay a lot of money for a dog (minimum of $1000), you should probably not breed it. If you paid more than $1,000 for it, it still needs to be certified and tested to see if it will reproduce good or bad in its offspring.