Is Cheng collectible?

The subject wants to ask, "Is Cheng's calligraphy collectible?" ? Yes Cheng, pen name, owner of Caotangzhai, a layman of Yeshu Temple, graduated from Shijiazhuang College of Literature and Art, and is a member of China Calligraphers Association. His Preface to Lanting Collection won the first prize in Lanting Cup Calligraphy Competition organized by China Calligraphers Association, and was praised as "Contemporary Wang Xizhi". His calligraphy has a high collection value.