The key is the money for photographic paper and ink. Epson's new generation glossy paper 6-color 6-inch ink plus original ink is almost 1 yuan 5. Kodak's photo-grade photographic paper and ink supply are only about 30 cents, A4 is about 4 times that of 6 inches, and the price naturally doubles. If it is 8 colors, the color of 12 is even more powerful. If it is a film, 6 inches is about 50 cents, whether it is plastic packaging or cold mounting.