How much is Zhang's calligraphy and painting worth?

Because no matter whose handwriting is good or not, there are valuable and worthless, expensive and relatively cheap, so we can't say how much money in general. It is just a reference, mainly depending on your own judgment and understanding of his paintings and calligraphy, as well as the hype in the market at that time. At the same time, the price of celebrities is higher than that of ordinary people. As long as there is no problem, it is collectible.