I too wondered how the no currency thing works on Earth. I mean, just look at the Picard family vineyard!
Here Picard and his brother Robert make a fine red wine. Chateau Picard. As you can see, the Picard family is certainly not hurting for money, or land, or water (for the grapes), or demand for their product.


Here Picard and his brother Robert make a fine red wine. Chateau Picard. As you can see, the Picard family is certainly not hurting for money, or land, or water (for the grapes), or demand for their product.