Newegg offers the HP ProLiant ML110 G9 Intel Xeon 2.8GHz Quad Tower Server, model no. 807879-S01, for $399.99. Apply coupon code "VCOBF15" and pay with Visa Checkout to cut the price to $374.99. With free shipping, that's the lowest total price we could find by $542. It features an Intel Xeon E5-1603 v3 2.8GHz Sandy Bridge quad-core processor, 4GB RAM, 1TB hard drive, and Gigabit Ethernet. (No operating system is included.) Deal ends November 29.
Note: The coupon can only be used once per account.