It mainly depends on your own judgment and understanding of his calligraphy and painting, as well as the market hype at the time. A calligraphy and painting will have different prices in different places, at different times, and in the hands of different auctioneers. Therefore, it is difficult to judge, let alone an absolute price; besides, any personal evaluation is only one-sided and personal point of view. Featured, famous, or wanted by someone special, these may make the price higher. It’s my own opinion, please forgive me if I’m wrong!