Newegg offers the refurbished Lenovo ThinkCentre M58p Intel Core 2 Duo 3GHz Desktop PC (no monitor), for $209 with free shipping. That's $11 under our June mention and the best price we've ever seen for any ThinkCentre with a 1TB hard drive. (It's also $141 off list and the best price we could find, outside the price below.) It features an Intel Core 2 Duo 3GHz processor, 4GB RAM, 1TB hard drive, DVD burner, and Windows 7 Pro. A 90-day warranty applies, but it's unclear who backs it.
A close price: Sears offers it, but with a 2.8GHz processor for $209.99 with free shipping. Shop Your Way Rewards will receive a credit (and possible additional discount) with purchase and may qualify for additional credits.