It depends on the situation. There are too many calligraphers and painters who are valuable but not marketable.
We are Beijing Juxiange Painting and Calligraphy Academy. You can find us on Baidu. You can also HI me directly on Baidu. Ordinary framed calligraphy and paintings start at 20 yuan. It can be decorated directly or given as a gift. Such as landscapes and peonies. Plum blossoms, calligraphy, etc. The more famous ones start at 200 yuan. Are you engaged in the calligraphy and painting industry? If not, it will be useful to you. I wish you a happy life.