Microsoft Store offers its 5.3-lb. Dell Inspiron 15 5000 Series Intel Broadwell Core i5 2.2GHz 15.6" Touchscreen Microsoft Signature Edition Laptop in Silver, model no. i5548-1670SLV, for $449 with free shipping. That's tied with our mention from last week as the lowest total price we've seen. (It's also $100 under the best price we could find for the non-Signature Edition version.) It features an Intel Core i5-5200U 2.2GHz Broadwell dual-core processor, 15.6" 1366x768 touchscreen LCD, 8GB RAM, 1TB hard drive, 802.11n wireless, Bluetooth 4.0, 3-cell battery, and Windows 8.1 64-bit.
Update: Specs corrected