2 sentences

1. 这本书的定价印在封底。

   zhè běn shū de dìng​jià yìn zài fēng​dǐ.

   The price of the book is printed on the back cover.

   Source: Dong Chinese Dictionary

2. 这本书的封底有作者简介。

   zhè běn shū de fēng​dǐ yǒu zuò​zhě jiǎn​jiè.

   There is a brief introduction of the author on the back cover of the book.

   Source: Dong Chinese Dictionary