This is actually not that bad for a prebuilt.
Assuming the parts in the pics are what you get:
PCPartPicker part list / Price breakdown by merchant
| Type | Item | Price |
|---|---|---|
| CPU | Intel Core i7-6700K 4.0GHz Quad-Core Processor | $329.99 @ SuperBiiz |
| CPU Cooler | Thermaltake Water 3.0 Performer C + LNC 81.3 CFM Liquid CPU Cooler | $63.99 @ SuperBiiz |
| Motherboard | Asus Z170-A ATX LGA1151 Motherboard | $152.89 @ OutletPC |
| Memory | GeIL EVO POTENZA 16GB (2 x 8GB) DDR4-2400 Memory | $89.89 @ OutletPC |
| Storage | ADATA Premier SP550 240GB 2.5" Solid State Drive | $69.99 @ NCIX US |
| Storage | Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard Drive | $88.88 @ Newegg Marketplace |
| Video Card | Zotac GeForce GTX 1080 8GB AMP! Edition Video Card | $575.71 @ Amazon |
| Case | NZXT S340 (White) ATX Mid Tower Case | $59.97 @ NCIX US |
| Power Supply | EVGA SuperNOVA NEX 750W 80+ Bronze Certified Semi-Modular ATX Power Supply | $67.99 @ NCIX US |
| Operating System | Microsoft Windows 10 Pro OEM 64-bit | $100.17 @ Amazon |
| Prices include shipping, taxes, rebates, and discounts | ||
| Total | $1599.47 | |
| Generated by PCPartPicker 2017-02-06 00:24 EST-0500 |