There is a lot of money and a lot of cocaine use in Lagos where I live. Many combatants in Africa's nasty little wars and militants are high on drugs. Indian hemp is the drug of choice because it grows locally, but cocaine is also used.

A few things about Lagos - there is a Porsche dealership here and every kind of luxury car on earth can be seen on its streets. The economy of Lagos alone is similar in size to the economy of Kenya! Nigeria's economy is on track to exceed the South African economy either this year or next year.

So while there are lot of poor people in Nigeria, there are a respectable number of people who can support a cocaine habit. Finally, I doubt street prices in West Africa are anywhere near the price in Europe.

From the Lagos State ministry of health website

4. Various types of drug use are prevalent among the population. The use of illicit drugs cuts across all social strata but is more common amongst motor park workers, drivers, artisans, prostitutes, etc. Use of heroin and cocaine is more prevalent in Lagos and other metropolitan cities and common among street beggars. The use of Amphetamine-type substances is also increasing, especially in big cities such as Lagos.
http://www.lagosstateministryofhealt...rogramme_id=32