Nigeria and Egypt are the only 2 African Countries where developers can now collect money from selling apps on the play store. Nigeria will be using USD (United States Dollar) and Egypt will be using Egyptian Pounds (EGP).
This brings the list of countries that can access the Merchant Registration to 54 countries. If you want to sell apps now and you are in Nigeria or Egypt all you have to do is setup your account at $25 and you then you can setup your Merchant account.
For more Information Check out the Google Play support website.