PCPartPicker part list:
http://pcpartpicker.com/p/jqgt99
Price breakdown by merchant: http://pcpartpicker.com/p/jqgt99/by_merchant/
CPU: AMD A8-3850 2.9GHz Quad-Core Processor ($83.98 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
Motherboard: ASRock A55M-VS Micro ATX FM1 Motherboard ($49.28 @ Newegg)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($74.99 @ Micro Center)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.99 @ Micro Center)
Video Card: Asus GeForce GTX 750 Ti 2GB Video Card ($129.99 @ NCIX US)
Case: Corsair 200R ATX Mid Tower Case ($39.99 @ Newegg)
Power Supply: Corsair CX 600W 80+ Bronze Certified Semi-Modular ATX Power Supply ($44.99 @ Newegg)
Total: $503.19
Prices include shipping, taxes, and discounts when available
That should do you just fine, you will also have plenty of upgrades in the future.