I think saks and store like nordstrom offer personal shoppers and style consultants free with no minimum to buy. I may be wrong as i've never used this service but i think i read about it somewhere. Other than that i'm not sure.
If, however, you want somebody to assist you in person for a reasonable price - that is going to be tough to find. You're lucky, for there are several consultants in the San Francisco area. But it's possible that only one specializes in men (and not for little money).