PCPartPicker part list:
https://pcpartpicker.com/list/RGH7nn
Price breakdown by merchant:
https://pcpartpicker.com/list/RGH7nn/by_merchant/
CPU: Intel Pentium G4560 3.5GHz Dual-Core Processor (Purchased For $49.99)
Motherboard: MSI H110I PRO AC Mini ITX LGA1151 Motherboard (Purchased For $73.96)
Memory: Corsair Vengeance LPX 8GB (1 x 8GB) DDR4-2666 Memory (Purchased For $52.15)
Video Card: Asus Radeon RX 470 4GB STRIX Video Card (Purchased For $122.75)
Case: Silverstone Sugo SG13WB Mini ITX Tower Case (Purchased For $39.99)
Operating System: Microsoft Windows 10 Pro OEM 64-bit (Purchased For $6.00)
Monitor: Acer G257HU smidpx 25.0" 2560x1440 60Hz Monitor (Purchased For $177.99)
Keyboard: Logitech G410 Atlas Spectrum Wired Gaming Keyboard (Purchased For $59.99)
Mouse: Logitech G303 Daedalus Apex Wired Optical Mouse (Purchased For $0.00)
Other: Toshiba OCZ TL100 (240GB) (Purchased For $58.73)
Other: EVGA 450B (Purchased For $29.99)
Total: $671.54
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-04-05 11:48 EDT-0400
my build ^
excluding the peripherals, that's $431.56. an h110 mobo can cause incompatibility issues, so opting for a b250 (which adds about $10-20) would be a better choice. i could definitely get it under $400 if i opt for a hard drive, less memory, a weaker gpu (460/1050), the free windows version, or a matx form factor (saves a little bit of money on the motherboard and case).