How much is the scrawny calligraphy of Song Chongyue, a modern red scientist, worth per square foot?

This man is not very famous and may be influential in the local area, but his value, history and time will prove it. According to my inference, he will not exceed four figures, or be hyped up, and will go down in price in the future. I can't tell without seeing the original and photos, but I forgot to measure them. I hope it has reference value for you.