Anyone who has so many pups that they cannot afford to feed pups better food has too many of them period. Why would you be the one to bargain shop for better food? And, you say you have a great health warranty? Who is going to pay if there is a problem with this pup? Surely not this breeder.
I hear you making a lot of excuses for her. Sad imo. I see people like her and the results of her kind of breeding on a daily basis...and I see people just like you who are so wanting a puppy that they ignore the obvious.
I am sorry that this is probably not what you want to hear....and I am very aware that you are going to purchase this puppy no matter what anyone here says. BUT...I would be remiss if I did not point out just the bare minimum here.
Will look forward to seeing your new puppy once you get him.