Unfortunately I have to agree with BayouCorgi.
The questions I posted earier, like I said, were good guidelines, and this breeder, with her responses, has raised at least three read flags for me. First, mommy is having her second litter before age 2. Second, she seems proud that the great-grandparents were OFA checked, but makes no mention as to the parents of this exact puppy. There's also no mention that any dogs had testing other than OFA (and remember... at a minimum you want OFA, CERF, and VWD testing). Finally, she seems very unconcerned about having dogs fit for showing and about whether or not any of her dogs get bred. This tells me that she's selling pet dogs for profit, rather than breeding dogs for betterment of the breed itself. Correct me, glencorgi or BaouCorgi, if I'm incorrect, but in my experience breeders generally won't give you a puppy's AKC papers for limited registration until they have proof of spaying or neutering for a pet-quality dog. Full registration is reserved for those puppies who are show/breeding prospects. This breeder obviously doesn't show her dogs at all and, in my opinion, can't care much about the standard if she isn't going to show her dogs for conformation or enter them in obedience, herding, or agility trials.
If distance is not a big deal to you and you would like a nice alternative to this breeder, I can offer to help you out! Unfortunately, I don't live anywhere near Oklahoma. However, the breeder I will be getting my puppy from lives in Mansfield, Ohio, and will be having puppies possibly any minute now! (She breeders Cardigan Welsh Corgis, not Pembrokes, which might be a turnoff...but I'd be happy to talk to you about the research we did into both breeds and why we're going with our Cardigan breeder.) The litter is going to be a big one, and I don't think there are too many other potential ownesr who even know about this litter yet. Her costs are very reasonable. If you want a tip on Pembrokes, an EXCELLENT, larger breeder is right near us in Philly and will be having two litters before the end of this month. As I mentioned, her pups are a little more pricey, but the parents have all either been shown or are top performance dogs in herding, agility, obedience, etc.
If distance is a concern, I'm sure others on this forum can help you find a better breeder closer to home, if you are interested. I know that neither of the two I would give you info on would probably be willing to ship a tiny puppy to a person they haven't met. Otherwise, feel free to send me a PM and I'll give you both my breeders' contact info.