A Costco superstore labeled a bunch of bibles as fiction. It was a mistake, though in reality, they were rightly marked as fiction.
The Christian bible, like all supposed holy books, is made up. The earth and the universe are not 6000 years old. But, it is politically incorrect for what is obvious to be stated, that the bible is not true and it is indeed a work of fiction. There was no Adam and Eve, other then as an imaginary couple as the figment of the minds of shepherds in the desert.
Of course the Christian right-wing acted as they were being persecuted, a common reaction on their part. So Costco, it is unfortunate that you had to change what was obviously true.