East Bay Vivarium in Berkeley has gorgeous snakes, but they are fairly overpriced... last time I was there, they had a beautiful hatchling 1.0 spider for $350. I just bought one from somebody on here (JW Reptiles) for $250 plus shipping, and he's just as pretty imo. But if you're really set on going local, definitely check out East Bay Viv! There's also a guy named Robert Seib in Walnut Creek, who advertises on craigslist... I checked him out on Fauna, and he has nothing but positive feedback.

EBV: http://www.eastbayvivarium.com/
Robert Seib: http://sfbay.craigslist.org/eby/pet/1324727431.html (I contacted him a while back, and his spiders were $250 if I remember correctly)