Newegg offers the refurbished HP Elite 8000 Intel Core 2 Duo 3GHz Desktop PC for $199.99 with free shipping. That's the lowest total price we could find by $3. Features include an Intel Core 2 Duo E8400 3GHz dual-core processor, 4GB RAM, 250GB hard drive, DVD-ROM, and Windows 7 Home Premium.
A 90-day warranty applies, although it's unclear who backs it.
Newegg via eBay offers the refurbished HP DC7800 Intel Core 2 Duo 1.83GHz Desktop PC (no monitor) for $119 with free shipping. That's the lowest total price we've seen for any HP DC7800 desktop without rebate hassles. (It's a current price low by $6.) It features an Intel Core 2 Duo E6300 1.83GHz dual-core processor, 2GB RAM, 80GB hard drive, DVD-ROM, and Windows 7 Home Premium 64-bit.
Apple Store again discounts a selection of its factory-refurbished, current-generation Apple Mac Pro Desktops, released in 2013, with prices from $2,549. Each desktop carries a 1-year Apple warranty, the same as new units. A couple of best bets: