In-depth Amazon coverage from the tech giant’s hometown, including e-commerce, AWS, Amazon Prime, Alexa, logistics, devices, and more.(Amazon Photo)Amazon Prime members in more than 3,500 U.S. cities can now get free grocery delivery for orders over $35 — if they pay$9.99 per month. The service initially rolled out to select cities in December, and is now widely available. Prime members — who already pay $139 per year — can order online from Whole Foods or Amazon Fresh and select a one-hour delivery window ...