I have my own books from the Public Administration Institute. The books are very clean for all four levels. Literally clean. Maybe all the books have only 20-40 pages written in them. There are more than 7 books. The price of one book at Jarir is 1200 riyals per book. So I will sell all the books for all levels together for 500. And I won't upset or disagree with the serious buyer. On the contrary, I benefited and want others to benefit. Please only serious buyers contact me. Hand-to-hand delivery in Jeddah.