Are Sun Chengzan's calligraphy works valuable?

Valuable. Sun Chengzan's calligraphy works cost1000-2,000 yuan, which is very valuable. Sun Chengzan, born in 1940, loved calligraphy since childhood and has been engaged in music and calligraphy teaching for more than 40 years. His calligraphy is profound, unique and self-contained. Hundreds of media, such as China Calligraphy Newspaper, China Calligraphy Newspaper and Zibo Daily, have reported his artistic achievements in calligraphy many times. Now he is an academician of China Calligraphy Art Research Institute and a member of China Calligraphy Creation Center.