How much is Kang Youwei's calligraphy?

It depends on the appearance, content, whether it contains people or things that reflect or prove history, and the meaning is different. If it is a couplet or a poem, it mainly depends on the appearance. Of course, size is also important. For example, Kang Youwei's eight-screen vertical shaft sold 8.8 million in 12, which is also Kang Youwei's most expensive work at present. If it is a calligraphy couplet, there are tens of thousands. What price can be sold depends on the real thing. Unless it is a particularly good work, the average work auction company can fool you to death.