Sam's Club offers its members the 5-lb. HP Pavilion X360 15-bk127cl Intel Kaby Lake Core i5 2.5GHz 15.6" Touchscreen 2-in-1 Laptop in Sporty Purple, model no. X7U11UA#ABA, for $529 with free shipping. (Non-members pay an additional $52.90, so it's better to sign up for a 1-year membership for $30.) That's the lowest total price we could find by $287.
It functions as a laptop or tablet and features an Intel Core i5-7200U 2.5GHz Kaby Lake dual-core processor, 15.6" 1920x1080 (1080p) LED-backlit IPS touchscreen LCD, 8GB RAM, 1TB hard drive, 802.11ac wireless, Bluetooth 4.0, Gigabit Ethernet, backlit keyboard, HDMI, USB 3.0, 3-cell battery, and Windows 10 Home 64-bit. Deal ends April 21.