The drug expenses comparison graph created by removing 15% of the operating profit of the gangster wholesalers and reducing it to the drug cost is as follows. Although Seoul National University Hospital's drug costs are on the decline due to the abolition of the market type real transaction price system, you can see that it is ranked next to Asan Hospital. Looking at drug costs and expenses, you can see that scholars and officials are differentially supporting Big 4 Hospitals except for Seoul National University Hospital. I used the same medicine, but the Health Insurance Corporation pays 100 won to Big 4 Hospital and 85 won to Seoul National University Hospital.