I am visiting San Francisco for a week in Mid August. Can you please recommend some afforable dining options around the city for all meals? I'm looking at spending under 10 for breakfast, under 20 for lunch, and dinner about 15-20 for the main, but under 40 total. I enjoy ethnic foods too.
Also, when are the different farmer's market open? I know there's one at Ferry Building and one at Civic Center. Are there any other farmers markets? And which of the two has better and cheaper produce?