Calligrapher: How much is the moon in Shi Xiang on the 15th?

No matter whose handwriting is good or not, there are valuable and worthless, expensive and relatively cheap, so you can't say in square terms, you can only say how much a piece is. Long Ge has no clear purpose, but only a reference, mainly depending on his own judgment and understanding of his paintings and calligraphy, as well as the hype in the market at that time. My own opinion, please forgive my mistake!