Hang it at home or go to a print shop to frame the whole photo, and it will be done for tens of dollars.
Mounted rice paper is several times more expensive. Of course, particularly good calligraphy is still valuable, and that kind of work can't be written in a short time. It takes time and energy to create. When you ask a calligrapher what is the value of his work, you should specify which one it is. Send a picture if you have one.