I'm about to buy a new gaming pc on craigslist. Is this a good deal?

Ehh, maybe a bit overpriced at $600 since it's used I'd say 500 is more fair, but below is what it would cost new:

PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-8320 3.5GHz 8-Core Processor ($131.00 @ Amazon)
Motherboard: ASRock 970 Performance ATX AM3+ Motherboard ($97.98 @ Newegg)
Memory: Kingston HyperX Fury Red 8GB (2 x 4GB) DDR3-1866 Memory ($34.99 @ Amazon)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($89.17 @ Amazon)
Storage: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive ($41.98 @ Amazon)
Video Card: MSI Radeon R9 380 4GB Video Card ($194.99 @ Newegg)
Case: Fractal Design Define S w/Window ATX Mid Tower Case ($89.99 @ NCIX US)
Power Supply: Thermaltake TR2 700W 80+ Gold Certified ATX Power Supply ($81.99 @ SuperBiiz)
Operating System: Microsoft Windows 10 Home OEM (64-bit) ($84.99 @ NCIX US)
Total: $847.08
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-05-09 12:34 EDT-0400
 

Jxochoa

Commendable
May 9, 2016
9
0
1,510
You may wanna bargin with the seller or research abit on the model, you may never know if their overinflating the true price or if their actually giving a bargain