On the one hand, Kong Weizhong's calligraphy works are highly sought after for their unique style and creativity. His works often show beautiful lines, unique brushwork and profound cultural connotation, which makes Kong Weizhong's works have certain appreciation potential.
On the other hand, the value of calligraphy works is also influenced by the relationship between market supply and demand and the evaluation of collectors. If Kong Weizhong's works are in short supply in the market, or are widely recognized by collectors, their value may rise sharply. However, if the market exceeds demand or collectors don't evaluate it highly, its value may be relatively low.
To sum up, Kong Weizhong's calligraphy works have certain collection value to a certain extent, but the specific value still needs to be determined according to the market situation and the evaluation of the collection community.