I think this is very unimaginative to claim that the developer/manufacturer costs are fixed in stone and THE ONLY WAY is for customers to zero-sum it amongst themselves.

Most of the cost was in development/trials, the marginal cost of manufacture is probably in the single digits per month. With such an enormous market demand the development costs can be recouped faster and there is a possibility to lower the prices in the states as well.

Also 10x difference points to more systematic differences in the healthcare systems not just altruism of the US citizens.