I was stationed in the Santa Barbara area for a couple years back around 1998. Housing was expensive, but everything else was about the same as my home state of Minnesota. I was on a COLA for housing expenses, so it was the same for me as if I was stationed anywhere else in the states.
I worked with a lot of great people who liked their jobs and loved living in California. I left that job after 2 years with a very positive feeling about California. Dear Wife and I have nothing but good memories of our tour in California.
Back then, I remember shopping at K-Mart for our basic staples. I don't think we even had a
Wal-Mart in our area. IIRC, some communities put a ban on
Wal-Mart stores because they had a business model designed to wipe out the local competition and then jack up the prices when those smaller local stores went out of business.

My memory is largely correct. I found this online...
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When
Wal-Mart came to our town, they wiped out K-Mart, which was the cornerstone of our main shopping mall. Without the K-Mart traffic in the mall, the other stores in the mall went out of business in a few years. The mall is a ghost town today. Maybe the mall concept had its day, and those days are gone. But I sure remember how you could spend hours and hours in the mall going from one small store to another. Back in the 1980's, the mall was packed. Today, it's dead.
I'm not blaming
Wal-Mart for everything bad in the world. Most of the things I personally buy are not even available at
Wal-Mart. I'm more of a Home Depot, Fleet, Menards, and Harbor Freight customer. I can literally go months without setting foot inside
Wal-Mart.
Dear Wife splits her shopping up between a number of stores, despite
Wal-Mart being the largest retailer in our town. We try to support our other local stores before going online to
Amazon. However, we take advantage of the online selection at
Amazon more and more each year. I don't like that trend, but even our local
Wal-Mart is forcing you to go online to buy items they used to carry in the store. At that point, you just consider the lowest delivered price.