Libertarian Muslim thought

So that raises the question: What is usury? Usury is something that's analogous to overcharging of any kind. I cite some Hadiths in which it's clear the Prophet was against any form of overcharging. For example, he talked about if a broker dealing with somebody from out of town were to misrepresent the buy and sell prices of the products he's dealing with, then that would be riba. Clearly, that kind of overcharging is not interest, but it is prohibited. So my argument is that overcharging of any kind is prohibited to Muslims. A Muslim has to engage in honest business practices.
--Imad A. Ahmad 404 Page Not Found : (linkrot)