Lenovo offers its Lenovo IdeaCentre K230 Pentium Dual-Core 2.4GHz Desktop PC, model no. 53591BU, for $459. With free shipping, it’s the lowest total price we could find for this system. Sales tax is added where applicable. It features an Intel Pentium Dual-Core E2220 2.4GHz processor, 5GB RAM, 500GB Serial ATA hard drive, DVD burner, and Windows Vista Home Premium.