Groceries were very expensive for me, and I tried to shop smart with Trader Joe's and Luckys (cheaper than Safeway/Sprouts/Whole foods). I would go to others for small things, but majority shopping there.
Here I live near a Trader Joe's, Whole Foods, Safeway, and a local chain call Metropolitan Market, which is like Whole foods 1000x better, but also very expensie.
My grocery budget is the same, but i spend less. For a $150 in groceries in California, I am paying about $110ish for the same things.
So maybe its a Bay Area thing, but I am just paying less somehow.
Likewise, I was living in Westwood LA (near UCLA), food for students is priced cheaper (and also has a bit more diversity). If I could live in the U District with a kid, I would totally go for that since eating out would be much cheaper.
Surely you mean income tax. Oregon is the state that lacks sales tax and makes up for it with an income tax.
Also, I'm not sure why your grocery bill would go down compared to California. Moving from LA to Bellevue, I noticed groceries cost more up here. Both states don't apply sales tax to groceries, at least.
It also costs a bit more to eat out here vs. LA, at least at the low end. Probably prices are cheaper in LA than the Bay Area, however.