Here's my list:
PCPartPicker part list:
http://pcpartpicker.com/p/zzkxpg
Price breakdown by merchant: http://pcpartpicker.com/p/zzkxpg/by_merchant/
CPU: Intel Core i5-6500 3.2GHz Quad-Core Processor ($199.99 @ SuperBiiz)
Motherboard: ASRock H170M-ITX/DL Mini ITX LGA1151 Motherboard ($92.98 @ Newegg)
Memory: G.Skill NT Series 8GB (1 x 8GB) DDR4-2133 Memory ($39.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($77.99 @ Amazon)
Video Card: EVGA GeForce GTX 960 2GB Superclocked Video Card ($184.99 @ SuperBiiz)
Case: Silverstone Sugo SG13B-Q Mini ITX Tower Case ($40.99 @ Amazon)
Power Supply: SeaSonic S12II 430W 80+ Bronze Certified ATX Power Supply ($48.99 @ SuperBiiz)
Operating System: Microsoft Windows 10 Home OEM (64-bit) ($35.00)
Monitor: Acer G227HQLbi 60Hz 21.5" Monitor ($99.99 @ Micro Center)
Total: $820.91
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-04 22:42 EST-0500
You can get the OS from reddit.com/r/microsoftsoftwareswap