The price of digital photography (DR), how much is a single part? How much are these two parts? What are the details?

DR is popular now, and the price is not stable. Now the single-part DR is generally 50. However, there are few doctors in a single station. At the beginning, there were more than two doctors, that is, 80 yuan, and the hospitals with Grade A or above were about 100- 120. However, there are still some places where there is local protectionism and the prices are not clear.