You know, sometimes people are in really hard situations. And they need medicines, but have no possibility to buy them at a high price. In that case, your shop is the only one way out! You render a real help to people.
In my opinion herbal drugs are more safe. And I have already checked, that it works no worse than ordinary medicines! For example, I lost 25 pounds with Acai Berry pills and there are any side effects!
A huge part of a brand drug price consists of research and development costs, and advertising. Drug companies that produce generic versions simply buy chemical ingredients and spend money on production. Thus they can sets lower prices on their products.