Finding a well qualified iphone developer at an affordable price in San Francisco can be difficult (to say the least). Unfortunately, paying a premium is all too common because of the strong demand for iPhone app development skills (plus the cost of living) in the Bay Area.
My advice is simple…Get a Referral from a business colleague (that has directly worked directly with the individual). I actually know many talented freelancers and development shops that I would be happy to introduce you to.
Please send me some project details and I’ll get you connected.