You probably figured this out already, but living a little bit out of town (along the peninsula for example) can cut your rent by 40%, which would be more than

You probably figured this out already, but living a little bit out of town (along the peninsula for example) can cut your rent by 40%, which would be more than the caltrain/bart fare to get you into town every day. Depending on your motivations, it could completely defeat the purpose of heading here though.