I agree the quality of Amazon self-published books can be terrible, notably recipe books. just as youtube can make anyone a tv star, or spotify a musician, Amaz

I agree the quality of Amazon self-published books can be terrible, notably recipe books. just as youtube can make anyone a tv star, or spotify a musician, Amazon self-publishing means anyone can be an author now as for the metadata, that would be retrospectively impossible. your best chance would be to filter out Amazon as a publisher