In addition to the creators, the price of calligraphy and painting is different according to the size of the theme, and the price and value are also different. It also depends on the appearance and creation age of the work.
Some paintings and calligraphy collections don't need to know their value, which is the same as gold and jade are priceless. As long as you like it, it has its value. You don't have to know its price. I suggest you collect some guaranteed paintings and calligraphy, which can be famous, but the price is higher, but you can also buy them from some guaranteed units. For example, you can promise to return it for ten years in one year, which can reduce the risk of collection and protect the interests of collectors in the best interests.