Why is 100 thousand a genuine book or an illegal publication? Published by China Bookstore, ISBN978-7-80663-884-2, CIP Data No.20 10/53800.

I don't know what you mean by free trial reading. There is nothing wrong with this book number. If you sell it at this price, it may be from the wrong source, or it may be pirated, but it may also be dealing with inventory. The 30% discount is just paper money, which is doubtful! Look at the printing quality, color matching and smell the ink. This book was published three years ago. If it smells like fresh ink, it is undoubtedly piracy. If there is a musty smell, the probability of inventory is greater.