Pharmaceuticals
Some prescription medications, most notably popular and branded drugs, can have very high prices in comparison to their cost of transport. In addition, pharmaceutical prices can vary significantly between countries, particularly as a result of government intervention in prices. As a consequence, the grey market for pharmaceuticals flourishes, particularly in Europe and along the US–Canadian border where Canadians often pay significantly lower prices for US made pharmaceuticals than Americans do.
Read more about this topic: Grey Market