Alaga iduro/ijoko as they are mostly called are also known as traditional wedding narrators and it's a common practice in western Nigeria among the Yorubas. Alaga Ijoko is the traditional master of ceremony for the bride's family whose duty is to co-ordinate the proceedings while alaga iduro stands for the grooms family.
There are many factors that can influence the price of an Alaga which include location and reputation of the alaga.
An average Alaga Iduro/Ijoko in Nigeria charge between 50,000 to 250,000. It can be higher or lower depending on the city and reputation.