Cheng Caoshun's calligraphy price inquiry

The price of painting, calligraphy and art is a matter of concern to everyone.

His paintings have been asked before, but these can't be directly priced, because there are many aspects to be considered in painting and calligraphy works, and it is unscientific to evaluate the price of works from the aspects of exquisiteness, theme, social influence, age and size. Do you think it makes sense?