The second-annual Prime Day was the biggest day ever for Amazon, surpassing last year by more than 60%, the online retailer reported.   “Prime itself is the best deal in the history of shopping, and Prime Day was created as a special benefit exclusively for our Prime members,” said Greg Greeley, vice president, Amazon Prime. “We want to thank our tens of millions of members around the world for making this the biggest day in the history of Amazon. We hope you had as much fun ...