Here is an idea of what you can get if you want to go for a 144hz monitor, which I highly recommend.
I've attached a build with and without a 144hz monitor.
The price difference is negligible, so I definitely recommend going with the 144hz build to get the most out of your PC.
You can always remove the SSD if you want to save a bit of money and don't mind longer boot times.
144hz:
PCPartPicker part list:
http://pcpartpicker.com/list/g88Bbj
Price breakdown by merchant: http://pcpartpicker.com/list/g88Bbj/by_merchant/
CPU: Intel Core i5-6500 3.2GHz Quad-Core Processor ($199.99 @ SuperBiiz)
Motherboard: Asus H110M-A Micro ATX LGA1151 Motherboard ($57.99 @ SuperBiiz)
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2400 Memory ($59.99 @ Newegg)
Storage: Samsung 850 EVO-Series 120GB 2.5" Solid State Drive ($69.94 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($47.49 @ OutletPC)
Case: NZXT S340 (Black) ATX Mid Tower Case ($64.95 @ Directron)
Power Supply: XFX TS 650W 80+ Gold Certified ATX Power Supply ($78.99 @ SuperBiiz)
Operating System: Microsoft Windows 10 Home OEM 64-bit ($85.95 @ Amazon)
Monitor: Acer GN246HL 24.0" 144Hz Monitor ($180.98 @ Newegg)
Other: RX480 4GB ($200.00)
Total: $1046.27
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-07-17 20:43 EDT-0400
60hz:
PCPartPicker part list:
http://pcpartpicker.com/list/LDnvnn
Price breakdown by merchant: http://pcpartpicker.com/list/LDnvnn/by_merchant/
CPU: Intel Core i5-6500 3.2GHz Quad-Core Processor ($199.99 @ SuperBiiz)
Motherboard: Asus H110M-A Micro ATX LGA1151 Motherboard ($57.99 @ SuperBiiz)
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2400 Memory ($59.99 @ Newegg)
Storage: Samsung 850 EVO-Series 120GB 2.5" Solid State Drive ($69.94 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($47.49 @ OutletPC)
Case: NZXT S340 (Black) ATX Mid Tower Case ($64.95 @ Directron)
Power Supply: XFX TS 650W 80+ Gold Certified ATX Power Supply ($78.99 @ SuperBiiz)
Operating System: Microsoft Windows 10 Home OEM 64-bit ($85.95 @ Amazon)
Monitor: BenQ GL2460HM 24.0" 60Hz Monitor ($138.99 @ Amazon)
Other: RX480 4GB ($200.00)
Total: $1004.28
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-07-17 20:45 EDT-0400