Walmart offers its Dell Inspiron 3050 Celeron 2.41GHz Mini Desktop PC, model no. i3050-4427, for $149 with free shipping. That's the lowest total price we could find by $80. It features an Intel Celeron j1800 2.41GHz Bay Trail dual-core processor, 2GB RAM, 32GB SSD, 802.11ac wireless, Bluetooth 4.0, HDMI, USB 3.0, and Windows 8.1 Home 64-bit.
Update: Specs corrected.