An African subsistence farmer makes what? A dollar a day. The average American makes $60k+ annually.

So who is going to be able to afford that bag of flour?

Further the African subsistence farmer has lost their harvest, so they don't even have that dollar.

The rich will always be able to outspend the poor. Making things uniformly more expensive doesnt change that. The west will continue to have an obesity epidemic while the poorest starve.