How much is the painter Bao Guoan's painting worth?

Bao Guoan, Vice Chairman of China Calligraphers Association. Five calligraphers in China. His huge calligraphy works are collected in the Great Hall of the People. Bao Guoan's calligraphy works have a high collection value, estimated at nearly100000 RMB per square foot. The Bao family are all calligraphers for three generations. Grandpa is conservative and honest, and he is a famous calligrapher in Qing Dynasty. He has high prestige because he can print all four words in a real cursive script. Father Bao studied calligraphy for a long time and was deeply influenced by Master Xu Beihong. His handwriting is simple, old and fluent, and he is a unique literati calligraphy artist in Hehuang area of Qinghai. Bao's three generations of calligraphy works were rated as national treasure art collections.