They say you have to spend money to make money. I would agree with that. Unless you dig clay from the earth, use your hands to form a pot, grind rocks to make paint, gather wood to build the fire to bake the pot and then stand by the side of the road to sell the pot, you probably have to spend at least a little money to be in business.
I had a chance to meet Esteban Valdez at his family compound just outside San Miguel de Allende Mexico a few years ago. He does just that. At his age though, other people are helping him gather the materials, so he probably has to pay out a bit in payroll these days in order to make his pots.