Starting in Chicago today, Prime Now is expanding delivery service to include groceries and more from Plum Market, Sprinkles Cupcakes, and My Fit Foods SEATTLE, 2015-12-14 — /EPR Retail News/ — Amazon.com, Inc. (NASDAQ: AMZN) today announced its Prime Now service, the company’s one-hour delivery service, will offer superfast delivery from local stores in Chicago in addition to…