What is the market price of calligrapher Niu Jianxin's works per square foot?

Niu Jianxin, male,1born in Luquan City, Hebei Province on February 25th, 970, is now a member of China Calligraphers Association, a member of Calligraphy Art Committee of China Couplet Association, a deputy director of Calligraphy Art Committee of Hebei Couplet Association, a rating member of Hebei Calligraphers Association, a director and deputy director of Shijiazhuang Calligraphy Association, a member of Luquan CPPCC, Luquan City.

I have studied calligraphy since I was a child. From 65438 to 0987, he studied under the famous calligrapher Xiong Jiquan, and made in-depth and detailed research on the inscriptions of Han Li, Qin Zhuan, Sijia in Tang Dynasty, Six Dynasties, epitaph of Northern Wei Dynasty, Dunhuang confetti, Erwangxingcao, Mi Fei and Wang Duo.

In the national exhibitions, he was selected for the 4th China New Artists Exhibition, the 2nd Sino-Japanese Calligraphy School Joint Exhibition, the National Weibei Calligraphy Competition, the Silver Award in the China Couplet Calligraphy Competition to celebrate the 55th anniversary of the founding of the People's Republic of China, the first Chinese Characters Exhibition of China Calligraphy Association, the National Calligraphy Exhibition of Wang Xizhi Cup, the National Calligraphy Exhibition of Civil Servants in Sanjin Cup, the National Calligraphy Exhibition of Xianfuren Cup and the National Calligraphy Exhibition of the Peak Cup to commemorate the 60th anniversary of War of Resistance against Japanese Aggression's victory. He has won the first prize of Fiona Fang Cup, Longteng Cup, the 30th anniversary of Sun Yat-sen's birthday/kloc-0, Baoduzhai Cup and Huanggu Cup for more than 20 times.

There are works published in Taibai Forest in Sichuan, Hanyuan Forest in Henan, Dongfeng Forest in Fujian, Zhangshiyan Forest and Baoduzhai Forest. His works are collected by Chinese Revolutionary History Museum, Zhejiang Jia Zhu Art Museum, China Art Museum, Gansu Archives and Guangxi Guilin Poetry Museum.

(Niu Jianxin's calligraphy works are embellished: 1000 yuan/square foot)