I've gone shopping at Grocery Outlet (discount West Coast chain) since I was in grad school and couldn't afford anything else. I could use higher quality stores now, but it's kind of fun to work recipes around their ever-changing (and incomplete) stock, so I tend to make one stop there and then drop by another store on the way home to fill in the gaps (usually just grapefruit juice and fresh bread). It only adds ~15 min. to the trip if I know what I'm missing before I walk in.