It is difficult to determine the specific cost. It should be different according to the level of the hospital and the city. You have a skin disease.

pigmented nevus

If you want surgery, the surgery itself is not expensive. If it is a pigmented nevus on the face, you need to go to the hospital.

orthopedics

Surgery, so the cost will be higher. Go to a qualified hospital for treatment first. The cost of the operation you mentioned is about 200-500 yuan.