Cityville games financial system is based on commodities which are in the form of crops and Cityville Goods.
These crop commodities , more crops means more commodities hence more business and ultimately more income from your business.
Increase goods level by visiting your friend’s farms and performing different duties there.
Make train trips to your facebook friend cityvilles for the purpose of business of your crops.
In cityville, as your level increase, you can build ports for your business and increase in commodities storage.
Also practise Commodities stock-piling.
Cityville Insiders speculate that in future there will be commodities speculation in cityville where negihbours come to a central village to bid and purchase commodities price thus creating a commodities market in Cityville.