NewEgg has the Lenovo ThinkServer TS140 Tower Server w/ Intel Core i3-4130 3.4GHz 4GB DDR3, No HDD, DVD/ROM, No OS for only $269.99 - $50 Rebate (exp 10/26) - $20 off via coupon code: VISACHECKOUT + $0 shipping = $199.99 shipped after rebate. Tax in CA, NJ, TN.
Dell Home has the Inspiron 3000 Series Desktop w/ Intel Core i5-4460 3.2GHz, 8GB DDR3, 1TB HDD, DVD+-RW, 802.11n, Bluetooth 4.0, Windows 7 Home Premium 64-bit for only $779.99 - $230 off = $549.99 w/ free shipping.