Cowboom offers the used Microsoft Surface Pro 3 12" 128GB Windows Tablet in Silver, model no. MQ2-00001, for $479.99 with free shipping. That's $349 under the lowest total price we could find for a new one, although we saw it used for $30 less three weeks ago. It features an Intel Core i5-4300U 1.9GHz Haswell dual-core processor, 12" 2160x1440 multi-touch LCD, 4GB RAM, 128GB internal flash storage, 802.11n wireless, Bluetooth 4.0, 5-megapixel front- and rear-facing cameras, microSD card slot, USB 3.0, and Windows 8.1 Pro.
No warranty information is provided; this item may have minor cosmetic signs of wear.