Amazon is doubling the excitement this year by extending Prime Day to four full days, from July 8 through July 11. Prime members can look forward to millions of deals across over 35 product categories, from household staples and back-to-school supplies to beauty, tech, and fashion. This summer’s event marks Amazon’s longest Prime Day ever and introduces “Today’s Big Deals,” a new feature spotlighting themed daily price drops that launch at midnight and are available while supplies last. The company promises its....