What price should I buy for Dakang calligraphy in 2015?

Appreciation of Dakang’s calligraphy? Dakang’s calligraphy works

Inscription: Title: Dakang. Content introduction: About the author: Kang Yin (1926-1999), alias Dakang, his ancestral home is Leting, Hebei Province. He liked calligraphy, painting and seal cutting since he was a child. He was a member of the Chinese Artists Association, a director of the Chinese Calligraphers Association, and a Qin Wen in Beijing. ..

baike.shufami.com/coll...? -?Baidu snapshot?-?Evaluation

Dakang’s running script inscription in 1998, mirrored paper version

No.: 1322

Estimate: RMB?10,000-15,000

Auction Date: 2015-03-31

Auction: Contemporary Painting and Calligraphy

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Company abbreviation: Kuangshi International?

Dakang seal script "Fu Shou" vertical scroll paper

No.: 0713

Estimated price: RMB? 2,000 -5,000

Auction date: 2015-03-30

Special auction: Modern calligraphy and painting (2)

Company abbreviation: Kuangshi International?

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Dakang calligraphy in 2015 should be equal to or higher than the price of the chairman of the provincial calligraphy association. I hope the questioner will adopt it