Here are the plumbing resources for The Peninsula. I have starred the ones that are worth a special trip. If you do your homework you can find some competitive pricing. You may have to try a few showrooms to see the actual faucet you want. (I like to feel the handles I am going to be using at 0 dark hundred!) And please sit in bathtubs before you order! The larger ones are not always the most comfortable.
Decorative Plumbing Supply San Carlos
* great service
SplashWorks San Jose/Willow Glen
* great service
Plumbing n Things Redwood City
extensive Kohler display
Fixtures and Faucets Redwood City and San Mateo
DJ Mehler SF, Design Center
more modern and high end showroom
Vintage Bath Los Altos
small but unique, traditional selection
Saratoga Plumbing Supply Saratoga
Cornerstone South San Francisco
Tubz Fremont
the place to try tubs