Dell Small Business offers its 4.5-lb. Dell Latitude 3590 Intel Kaby Lake Core i5 2.5GHz 15.6" Laptop for $589 with free shipping. That's $368 off list and the lowest price we could find. Features include:
Intel Core i5-7200U 2.5GHz Kaby Lake dual-core processor
15.6" 1366x768 LED-backlit LCD
500GB 7200 rpm hard drive
Windows 10 Pro 64-bit
These steps will help ensure you don't outlive your money.