How much is a flat foot for Mr. Zhan Biao's work?

The price of each calligrapher's works varies according to his fame, his preferences and the current market situation. I don't know much about Mr. Biao Zhan's calligraphy, but the price of calligraphy is different. Some time ago, I asked Mr. Fu Jianzeng to write an inscription for work, and the price was about 5,000 square meters. This gentleman has a distinctive calligraphy style and is good at cursive writing, especially left-handed calligraphy. He is currently the vice chairman of China Calligraphers Association. Other details can be found in the information, hoping to bring you some reference value.