Aldi has strived to offer great products at low prices. Tell the interviewer that you think the low prices Aldi has been able to offer on great quality products has made it a success. The quarter system for carts, the smaller store footprint, and the wise decision to not offer shopping bags are all a part of things Aldi has done to keep costs down. Be sure to mention that Aldi also offers great service to its customers, and this helps keep them coming back. Finally, tell the interviewer that you look forward to supporting cost saving measures that are implemented in the stores and being one of those Aldi employees that supports its team through great customer service!