Walmart offers its 5-lb.Dell Inspiron 15 3000 Series 3567 Intel Kaby Lake Core i5 2.5GHz 15.6" Laptopin Black for$409withfree shipping. That's $6 under our mention from three weeks ago and the lowest price we could find by $90. It features:Intel Core i5-7200U 2.5GHz Kaby Lake dual-core processor15.6" 1366x768 (720p) LED-backlit...