This refurbished Dell Optiplex Tower PC (Main Unit Only) is just $69.99 on Tanga.com. This is perfect if you already have a working monitor, keyboard and mouse. Or add $9.99 for a keyboard and mouse and check out this monitor deal. It's ready for your everyday computing with a 40 GB hard drive, 2.8 GHz processor, 1 GB of DDR2 RAM, and integrated Gigabit Ethernet LAN. Even with $9.99 shipping, this is more than $100 lower than the next lowest price we found. Sales tax is not charged in most states.