Some call San Francisco the City by the Bay, the Golden Gate City, or simply 'Frisco, but no one has ever called the city Cheap. It's not cheap to visit and even getting to the city is pricey. If you take the bridge into town, the admission charge is $6.
Still, San Francisco's charms can be accessed on a tightwad's budget. David and I enjoyed the city, saw every site we could cram into three days, and still stayed within a strict budget.