Plenty of Cali people here, should be able to point you in the right direction to find some.
Really easy to find true SAE (though not always correctly ID'd) in my area at pretty much any fish store (even big chain).
Wet Spot Tropical Fish usually has them (they correctly ID). Seems they don't right now, but might get them in next Friday. They do have Fish Net Flying Fox ($5, bottom of the CYPRINIFORMES section) aka Reticulated Flying Fox (Crossocheilus reticulatus, same genus as true SAE, just a relative species. Not a "Flying Fox" genus like the common name says) though.
I've got those and they are just as good algae eaters, if not better. Mine are 5 inches and still eat hair algae and BBA quick. They still hang out in their group and show no aggression toward any other fish (I have even 1/2" fish with them). So I would say they remain eating algae (I don't need to starve them either to get them to eat algae. They can eat fish food too.) and don't get aggressive when they get bigger/older like I've heard others say their SAE's get.
Fish