| http://www.w3.org/ns/prov#value | - It was one of the first chains to begin selling prepared foods, including doughnuts, coffee and pizza in the early 1980s.The key to Casey's success is its profit margins of roughly 30% for grocery and nonfood items and 60% for prepared foods.For more than a decade, the signature product of Casey's has not been gasoline, or cigarettes or beer.
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