Towers & monitors $60 - $85 depending on what you need. No keyboards or Mice available at this time. - Intel Dual-Core systems. OptiPlex 330, 380, & GX620 - Windows 7 Professional & Avast Anti-Virus Installed - Ethernet DVD-Burner - Can also add PCIe graphics cards! Let us know what you need! $10-$25 We have monitors that range from basic to advanced. The monitor shown has speakers, USB ports, and adjustable height and rotation.