Is Zhang's calligraphy valuable?

Zhang's calligraphy is worthless. According to relevant records, Zhang was born in Luoyang, the ancient capital of the 13th dynasty. He is currently a member of China Calligraphers Association, executive director of China Bangshu Committee, member of China National Ceremony Committee, president of Huaxia Painting and Calligraphy Institute and national ceremony artist. His calligraphy works sell for several hundred yuan, which is of medium level.