Because the author spent a long time conceiving, writing and contacting the publishing house, and the publishing house had to design, edit, proofread, print, publicize and distribute, both the author and the publishing house spent time, money and energy on this book. This is why genuine books are expensive. However, you don't need to consider the problem of piracy, as long as the book is reprinted after it comes out, using the lowest materials, regardless of the feelings of readers, authors and publishers. This is why piracy is cheap. Taobao sold 20 yuan, only spent paper and ink, leaving a net profit. And the cost of genuine books is much higher than that of paper and ink.