How much is Li Renyi's calligraphy per square foot?

The same and different calligraphy and paintings have different prices in different people's eyes, but no matter whose calligraphy and paintings are good or bad, they are valuable and worthless, expensive and relatively cheap. The price of a painting and calligraphy will be different in different places, different times and different auctioneers. So it's hard to judge. In particular, Runge is an unreliable reference, mainly depending on the market and my own understanding of the work.