THE German owned Aldi international operation that has more than 8000 stores around the world (and still rapidly expanding), is now being called the world’s best grocery chain. About 90% of the products it sells are private label and it continues to offer fewer sku’s than any other group – around 1400 compared with many supermarkets of up to 40,000. Amongst its success factors is the double product guarantee where if a customer is not satisfied, there is a full refund and a new replacement product is given free.