what do u think of a custom built pc that has this inside quoted at $3000 aussie dollars, worth it or ripoff

[Mohammad Zayied]

ddr4 16gb ram, gtx 980, core i7 5820k, 2tb hdd, 256ssd, corsair 450d mid tower case, msi gaming series 7, 24" inch monitor, windows 8, water cooling (Coolermaster Seidon 120xl), evga supernova g2 850watt gold rating, keyboard and mouse (Logitech mk120), and optical drive (LG)

 

[DonkeyOatie]

$3000 Australian includes 10% GST and is equivalent to about $2200 US allowing for GST and the 0.8 exchange rate.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-5820K 3.3GHz 6-Core Processor ($348.76 @ Amazon)
CPU Cooler: Cooler Master Seidon 120V 86.2 CFM Liquid CPU Cooler ($49.99 @ B&H)
Motherboard: MSI X99S Gaming 7 ATX LGA2011-3 Motherboard ($218.99 @ SuperBiiz)
Memory: Crucial Ballistix Sport 16GB (4 x 4GB) DDR4-2400 Memory ($159.99 @ Newegg)
Storage: Crucial BX100 250GB 2.5" Solid State Drive ($94.99 @ Amazon)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($71.88 @ OutletPC)
Video Card: Zotac GeForce GTX 980 4GB AMP! Omega Edition Video Card ($535.99 @ Best Buy)
Case: Corsair 450D ATX Mid Tower Case ($89.99 @ Newegg)
Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($104.99 @ NCIX US)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.98 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.49 @ OutletPC)
Monitor: AOC E2425SWD 60Hz 24.0" Monitor ($129.99 @ Best Buy)
Keyboard: Logitech MK120 Wired Slim Keyboard w/Optical Mouse ($14.89 @ SuperBiiz)
Total: $1922.92
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-05-16 07:38 EDT-0400

Seems reasonable to me.

I would save money with different parts for a gaming system, but that's a different story.