Here you go, hope you like this.
PCPartPicker part list:
http://pcpartpicker.com/p/YDKQLk
Price breakdown by merchant: http://pcpartpicker.com/p/YDKQLk/by_merchant/
CPU: AMD Athlon X4 760K 3.8GHz Quad-Core Processor ($82.06 @ Amazon)
Motherboard: Asus A55BM-K Micro ATX FM2+ Motherboard ($59.98 @ SuperBiiz)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($70.99 @ Newegg)
Storage: Hitachi Ultrastar 1TB 3.5" 7200RPM Internal Hard Drive ($42.99 @ Amazon)
Video Card: PowerColor Radeon R7 250X 1GB Video Card ($69.99 @ Newegg)
Case: Thermaltake Versa H21 Window ATX Mid Tower Case ($34.99 @ Newegg)
Power Supply: Corsair Builder 430W 80+ Bronze Certified ATX Power Supply ($19.99 @ Newegg)
Operating System: Microsoft Windows 8.1 Pro - 64-bit (OEM) (64-bit) ($129.94 @ OutletPC)
Total: $499.93
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-10-20 13:50 EDT-0400