Not necessarily. Although the publishing house and price could be used as a reference, they were not the only criteria for judging. When purchasing light novels, one could also check if the book had an authorization mark. Genuine light novels usually had the logo of the authorized company or the words " Genuine authorization " on the cover. In addition, he could check if there was a copyright notice in the body of the book to ensure that the book was genuine. He could also check the quality of the books. Genuine light novels were usually of better quality than pirated ones because they had the author's signature and authorization mark, as well as the author's copyright declaration. If the quality of the light novel was not good, then it might be pirated. To sum up, the publishing house and price were only reference factors, not the only criteria. When buying light novels, it is recommended to carefully check the quality and authorization mark of the book to confirm whether it is genuine.