May I ask the approximate price of Yuan Jiagu's calligraphy works (Six Flags), the champion of Yunnan in the late Qing Dynasty?

Yuan Jiagu, No.,was the top scholar in the Department of Economics during Guangxu period, and became a layman in Pingshan in his later years. At the beginning of February 2007, Chengdu Jinsha Auction Co., Ltd. held an auction of six calligraphy screens (scale 240*60*6) by Yuan Jiagu (1930), with an estimated value of RMB 50-50,000-80,000. The transaction is still unknown. The attached drawing is part of this batch of drawings, so you can check the handwriting.