How much is the word Lu Changcun worth?

Anping square feet, the older the more valuable! ! ! He is a first-class calligrapher, director of China Calligraphers Association, senior calligrapher of Shandong Hard Pen Calligraphers Association, vice president of Qingdao Laoshan Art and Calligraphy Institute, member of the special invitation department of China Ancient Culture and Art Research Association, honorary chairman of Great Wall Soul Contemporary Poetry Calligraphers Association, etc. It is estimated that the appreciation potential is great. Want to sell? .