This is a used product.  The HP ProDesk 600 G1 Tower is a premium tier-1 business class desktop tower.  Business-class desktops are better built, use better parts and are often a better option than new low/mid-grade options.

HP ProDesk 600 G1 Tower

Intel i5-4570 Processor, 8GB RAM, 1TB Hard Drive, DVD-RW, Windows 10 Pro, 10x USB ports, 2x Displayport, and VGA.

Price: $299.99