I finally tried Amazon's free, two-hour Whole Foods delivery, and I was shocked to discover it isn't free (AMZN)

Business Insider I tested Amazon's free, two-hour delivery from Whole Foods stores. I loved the convenience of the service but was shocked to find that it wasn't technically free. The app tacks on an optional tip for the courier that cost me $18, on top of the $163 that I paid for the groceries. That means the service is only free if shoppers opt out of tipping their couriers. Amazon is now offering free, two-hour delivery of Whole Foods groceries to members of its paid Prime program in about 30...