It’s a German chain. Low markup and not a lot of selection. Lidl is also German and similar, but larger stores with somewhat more selection, generally better. Trader Joe was originally California based, and is low markup, but more health food and high end oriented. It was bought up by the same German company / family as Aldis.
The quarter for the shopping cart is German style. In Germany and Austria, you have to pay for shopping bags. The presentation is not so good. The products are mostly still in the boxes they came in, so hard to see.
Walmart has a similar approach with low markup, and also limited selection for food. There is not so much point in going to Costco or BJs, as you get almost as low prices without having to buy large quantities.
Some supermarkets near me have ridiculously high markup and few customers. With all the inflation, particularly of food prices, and salaries not keeping up, buying cheaper is attractive.
Aldi product and shopping experience is way better than Walmart.