Is the work of calligrapher Yang Wu valuable? How much is a flat foot? Is his calligraphy collectible?

Yang Wu, 1969, a native of Guang 'an, Sichuan, graduated from the Calligraphy Department of Capital Normal University and is a member of China Calligraphers Association. Ge Yanxing won the first prize of the National Calligraphy Exhibition organized by China Calligraphers Association, and published several papers in China Calligraphy, such as Persistence and Breakthrough —— Reflections on Calligraphy Creation. Learning from famous artists, he enjoys a high reputation in calligraphy. According to similar works on the market, a flat foot costs about 5000-8000 yuan. However, calligraphy and painting works are all the same. Without a uniform price, if people like it, the price will naturally be higher. I hope the answer will satisfy you. Thank you.