Doesn’t seem normal at all to me. Don't know what else to tell you other than, NEVER buy a kitten or puppy from a pet store. Their “suppliers” very often are running a “puppy mill” or “kittie” mill. They notoriously provide unwell animals who are most likely going to die, or cost you a lot to resurrect them.
My experience? One adorable Siamese kitty whom I watched die painfully from Feline Leukemia.
Don't know what else to tell you other than, NEVER buy a kitten or puppy from a pet store.
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She didn't buy them from a pet store. Her local pet store was holding an adoption event.