Hi Forrest,
I don't know about the left coast but I did a google search when I wanted some in the east last summer. Turned up several sources within 150 miles, and local questioning brought up a good one right here in town. If you don't want much, shipping costs shouldn't eat you up, compared to the price of teak, at least.
The local shop made a run for me to get the sizes I needed, came out with quite a bit of overage which came to me at a good price, so I've made a few more items after I did the cockpit grating in the 25. You can see the cockpit in our album, I need to add the others, I see, maybe I can do that now.