When I have enough free time I shop like this. We don't have Aldi but we have Grocery Outlet. It's a discount grocery that has some reliable products but mainly over stock or discontinued labeling or some small flaw in packaging or product (ice cream with all the mix-ins at the bottom) or near expiry that wouldn't fly at a regular store. So you never know what you'll find there, for very low prices. Then I hit up Safeway, decent quality, where half the store is usually on some buy-one-get-one sale, then to the high end, employee owned, small chain where I can get farm stand quality meats raised a few miles away, high quality cat food and local produce.

Shopping this way saves about $400 per month. When I don't really have time (I work 72 hours per week, take online college classes and have elderly family members to look in on) I end up spending about $1000 per month on groceries at the fancy store.