I head to the public market every Saturday to get my veggies and sometimes on other days to eat at the food trucks. The market on Saturday is impressive. You can get delicious bread, locally grown veggies, fruit, plants, and many other locally made wares. Most stalls take credit card and if they don't, you can buy with a card at customer service. The Wed market is less impressive... not much there, but definitely good if you forgot something or need a couple items mid week. This isn't the most amazing farmer's market in the world, but it is my favorite in Phoenix.