Unlike city life, the MV life is pretty basic and hence cheap. Houses will be cheaply built, food will be produced locally and energy will be generated from natural, renewable sources.
Villagers would have to produce their own, pure food. So economic activity would be primarily organic permaculture. Home Industries would be encouraged to allow parents to be with their children while working. Those who have the skills could persue their professions in a nearby town or city using the village as a base.
There would also exist an Islamic market for trading of goods and services.