This ASUS Transformer Book Flip TP200SA-UHBF Signature Edition Laptop drops from $349 to $279 at the Microsoft Store. Plus, the shipping is free. This the lowest price we found for one by $20. It has a 11.6" touchscreen display that can be flipped to used like a tablet. It also has a 7-hour battery life and is equipped with 2GB of memory, a 32GB SSD, and an Intel Celeron N3050 processor. Sales tax is charged in most states.