Aldi is one of my favorite grocery stores. It's one of the two leading global discount supermarket chains, too. They have more than 10,000 stores in 18 countries. 
I have never been to one. Sounds like a store I would like. Are they reasonably priced.
Aldi is very affordable. They have lots of their own store brand products and less name-brand ones. They're also based in Germany. 
The name is similar to the car Audi and makes me think of Germany because of that.
Audi
Audi AG () is a German automobile manufacturer that designs, engineers, produces, markets and distributes luxury vehicles. Audi is a member of the Volkswagen Group and has its roots at Ingolstadt, Bavaria, Germany. Audi-branded vehicles are produced in nine production facilities worldwide.
The origins of the company are complex, going back to the early 20th century and the initial enterprises (Horch and the "Audiwerke") founded by engineer August Horch; and two other manufacturers (DKW and Wanderer), leading
Aldi
Aldi (stylised as ALDI) is the common brand of two German family-owned discount supermarket chains with over 10,000 stores in 20 countries, and an estimated combined turnover of more than €50 billion. Based in Germany, the chain was founded by brothers Karl and Theo Albrecht in 1946 when they took over their mother's store in Essen, which had been in operation since 1913. The business was split into two separate groups in 1960, that later became Aldi Nord, headquartered in Essen, and Aldi Süd