@MMarciano,
Hmm.
I've relatives in O.C. - they are sort of my opposites in views and tastes - but there's a space on the road from there to LA, I forget the name. More toward LA.
Instead of guessing what is going on in high end markets, I'd nose around for what is there in latino markets in the entire area.
Me, I get my tomatillos at walmart, though not lately, as I despise the parking lot, aka death trap in wait, besides other reasons.