I definately would not take the job. I seriously doubt your employer would let you educate people in the way that is necessary. I strongly disagree with selling puppies at petstores because anybody can just go get one. There really needs to be a screening process (which good breeders have - and even better, good shelters and rescues also have). And not to mention the whole puppymill aspect of it. Blah.

Anyway, thats just my opinion.