Amazon pleasantly surprised its customers late last year when the company announced it would begin delivering packages on Sundays. Partnering with the United States Postal Service, Amazon brought Sunday deliveries to New York and Los Angeles last November, but on Thursday the biggest online retailer in the world revealed that the service would be expanding to 15 more cities. The cities that are now eligible for Sunday deliveries include Austin, College Station, Dallas, Houston and San Antonio, TX; Cincinnati and Columbus, OH; Indianapolis, IN; Lexington and Louisville, KY; New Orleans and Shreveport, LA; Oklahoma City, OK and Philadelphia, PA. Amazon has been keeping track of Sunday deliveries as well to see which items consumers are most likely to have delivered over the weekend. “So far, the