Just make it localized in the region language only for that price. Ok, doesn't work with Nigeria, since they speak english. But it would work in Asia, and in a lot of other African and south American countries.
On that note: why not just skip geography entirely? Just sell the localized versions worldwide, which each translation being priced according to what the users of the respective languages would on average be willing/able to pay.
Yes but it can be a useful business approximation depending of your target.