WIESBADEN, Germany, July 31 — Three days after Wal-Mart Stores announced that it would pull out of Germany, Roland Kögel was wandering through the aisles of a somewhat threadbare Wal-Mart in a strip mall in this western German city. Multimedia {draw:a} Related Retail Chains Scramble to Enter Indian Market (August 2, 2006) ) {draw:a} Chung Sung-Jun/Getty Images In South Korea, Wal-Mart had only 16 stores — a small presence that contributed to its decision in May to sell out to a Korean discount chain. {text:bookmark-start} {text:bookmark-end} “Why are they giving up now?” he asked. “They have good prices and a good variety of products.” Yet Mr. Kögel, 54, confessed that he never bought groceries at Wal-Mart. Food is cheaper at German discount chains. He also does not visit this store often, because it is on the edge of town and he does not own a car. His one purchase for the day was tucked under his arm: a neck pillow. Shoppers like Roland Kögel help explain why Wal-Mart raised the white flag in Germany, the site of the company’s first foray into Europe. After nearly a decade of trying, Wal-Mart never cracked the country — failing to become the all-in-one shopping destination for Germans that it is for so many millions of Americans. Wal-Mart’s problems are not limited to Germany. The retail giant has struggled in countries like South Korea and Japan as it discovered that its formula for success — low prices, zealous inventory control and a large array of merchandise — did not translate to markets with their own discount chains and shoppers with different habits. Over all, Wal-Mart is still expanding outside the United States, particularly in markets where it entered by acquiring a strong retail ...