I just checked insulin price in France, we have SANOFI 100 UI/ml 15ML for the price of 20€. How is it possible to have 300$ Vial ? Sanofi ain't exactly a chari

I just checked insulin price in France, we have SANOFI 100 UI/ml 15ML for the price of 20€. How is it possible to have 300$ Vial ? Sanofi ain't exactly a charity and they are doing extremely well financially, 300$ is obscene. If they sell it at 300$, there must be people buying it. Who are they ?