Best Buy offers the refurbished 5-lb. Samsung ATIV Book 4 Intel Core i7 2GHz 15.6" LED-Backlit Laptop, model no. GCRF-NP510R5E-A02UB, for $529.99 with free shipping. That's lowest total price we've seen for a Samsung ATIV Book 4 laptop an Intel i7 processor. (It's also $190 under the lowest total price we could find for a new one elsewhere; this one's refurbished.) Features include an Intel Core i7-3537U 2GHz Ivy Bridge dual-core processor, 15.6" 1920x1080 LED-backlit LCD, 8GB RAM, 750GB hard drive, 802.11n, Bluetooth, webcam, USB 3.0, HDMI, 4-cell battery, and Windows 8. (No optical drive is included.)
A 1-year warranty applies; however, it's unclear who supports it.