If participating in a local farmers' market requires that a farmer pay two laborers $10 an hour for seven hours, spend $50 in gas, pay a $40 weekly participation fee, and bring produce with a wholesale value of $750, how much would the farmer have to make to break even? If the farmer needed the total sales to be 20 percent more than the expenses, how much would the booth have to sell? Since there is not a lot of profit in the business, why might a farmer continue to participate in a farmers' market even if it did not generate a lot of revenue?