Its about $700 plus peripherals, plus your $250 but no OS. Try -
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($209.99 @ Amazon)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.70 @ Amazon)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard ($144.95 @ SuperBiiz)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1866 Memory ($86.98 @ OutletPC)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($53.98 @ OutletPC)
Video Card: Gigabyte Radeon R9 280X 3GB WINDFORCE Video Card ($283.98 @ SuperBiiz)
Case: Corsair Graphite Series 230T Orange ATX Mid Tower Case ($67.99 @ Micro Center)
Power Supply: Antec High Current Gamer 620W 80+ Bronze Certified Semi-Modular ATX Power Supply...