How much is the calligraphy work of the famous calligrapher Hu Min now? What are the investment prospects?

The current market price is 5000-9000 yuan per square meter. Some time ago, there was a four-foot exhortation note at an auction, which sold for 26,000 yuan. Let's make a reference, hehe! As for the investment prospect, it should be good. Hu Min, a respected calligrapher of the older generation, has passed away, and his calligraphy still exists in the world. There is no telling whether his calligraphy is good or bad, especially his cursive scripts are available all over the country, depending on the market operation.