PCPartPicker part list: https://pcpartpicker.com/list/FLRp6X
Price breakdown by merchant: https://pcpartpicker.com/list/FLRp6X/by_merchant/

CPU: AMD - Athlon X4 860K 3.7GHz Quad-Core Processor  ($59.99 @ Amazon) 
Motherboard: MSI - A68HM-GRENADE Micro ATX FM2+ Motherboard  ($46.49 @ Amazon) 
Memory: Crucial - Ballistix Sport 8GB (1 x 8GB) DDR3-1600 Memory  ($52.54 @ Amazon) 
Storage: Western Digital - Caviar Blue 250GB 3.5" 7200RPM Internal Hard Drive  ($16.99 @ Amazon) 
Video Card: Asus - GeForce GT 1030 2GB Phoenix Fan OC Video Card  ($76.99 @ Amazon) 
Case: Fractal Design - Core 1100 MicroATX Mini Tower Case  ($44.99 @ NCIX US) 
Power Supply: Corsair - CXM 550W 80+ Bronze Certified Semi-Modular ATX Power Supply  ($36.99 @ Newegg) 
Total: $334.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-09-19 19:53 EDT-0400