Compared to other big grocery chains in the U.S., Aldi offers quite the unique shopping experience. For one, it charges 25 cents for a shopping cart, though you do get the quarter back when you return the cart to its rightful place once you're done shopping. The practice of having to use change to access a shopping cart is pretty rare in the States, but it's actually very common in Europe, where Aldi is originally from.
In the grocery store scene from their early TLC special, Michelle Duggar outlines the scale of their shopping, indicating they buy massive quantities of food, such as 24 cans of milk and a case of butter with 48 sticks.