sorry but you can build a gaming pc, that is close to the ps4 in power, for alot cheaper then that, plus why did they add taxes to the price? most online stores dont tax you. hell here is a quick thing i slaped together
PCPartPicker part list: http://pcpartpicker.com/p/2rPGt6
Price breakdown by merchant: http://pcpartpicker.com/p/2rPGt6/by_merchant/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($89.99 @ Newegg)
Motherboard: Asus M5A78L-M LX PLUS Micro ATX AM3+ Motherboard ($38.98 @ Newegg)
Memory: Crucial 4GB (1 x 4GB) DDR3-1600 Memory ($36.69 @ Newegg)
Storage: Western Digital AV-GP 500GB 3.5" 5400RPM Internal Hard Drive ($40.98 @ Amazon)
Video Card: HIS Radeon R9 270 2GB IceQ X² Video Card ($111.99 @ Newegg)
Case: HEC Vigilance MicroATX Mini Tower Case ($23.99 @ SuperBiiz)
Power Supply: EVGA 500W 80+ Certified ATX Power Supply ($14.99 @ NCIX US)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($13.99 @ Newegg)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Keyboard: Rosewill RK-101 Wired Standard Keyboard ($5.99 @ Amazon)
Mouse: V7 Full size USB Optical Mouse Wired Optical Mouse ($4.50 @ Mwave)
Total: $456.07
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-12-28 12:06 EST-0500
so about $100 cheaper then there pc with about the same power.