Microsoft Store offers the 2.7-lb. Asus Zenbook Intel Core m3 900MHz 13.3" Signature Edition Laptop in Obsidian Stone, model no. UX305CA-UHM1, for $599 with free shipping. That's $100 under the lowest total price we could find for a non-Signature Edition. It features an Intel Core m3-6Y30 900MHz Skylake dual-core processor, 13.3" 1920x1080 (1080p) IPS LED-backlit display, 8GB RAM, 256GB SSD, 802.11ac wireless, Bluetooth 4.0, media card reader, 3-cell battery, and Windows 10 Home 64-bit.
Note: Microsoft Signature Edition devices feature a clean operating system without any third-party trialware. Click here to learn more.