Is Jiang Lianwen's calligraphy collectible?

Jiang Lianwen's calligraphy is very collectible. According to the information released by Calligraphy Collection Network on March 2, 2023, the market price of Jiang Lianwen's calligraphy is estimated to be 8000- 10000 yuan per square foot, which is 1500 yuan higher than that in 2022, and it is appreciating every year. Jiang Lianwen, born in Laixi, Qingdao, is a national ceremony artist.