Is this build worth $900?

[Lirik]

I found this post on craigslist for a gaming computer. I tried offering him $700 for it, which was kinda a low ball now that I think about it, but I said $700 without the keyboard, mouse, wifi card, and ssd, since I already have all of that. I think I maybe able to talk him down to $900. Could I do better online? Here's the link to the post

Here are the parts (as he listed):
I7 4790k
120gb Samsung ssd
H60 water cooling cpu
Air 540 case
Wifi card
Msi motherboard
650 rm gold certified power supply
16gb hyperx fury ram
Corsair FPS mouse
Gtx 1060
Orion spectrum full rgb keyboard

 

[Zerk2012]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-6600K 3.5GHz Quad-Core Processor ($227.99 @ SuperBiiz)
CPU Cooler: CRYORIG H7 49.0 CFM CPU Cooler ($34.88 @ OutletPC)
Motherboard: Gigabyte GA-Z170M-D3H Micro ATX LGA1151 Motherboard ($106.99 @ SuperBiiz)
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2133 Memory ($67.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.49 @ OutletPC)
Video Card: Gigabyte GeForce GTX 1060 6GB 6GB WINDFORCE OC 6G Video Card ($239.99 @ Newegg)
Case: Cooler Master N200 MicroATX Mid Tower Case ($45.99 @ NCIX US)
Power Supply: Corsair CXM 550W 80+ Bronze Certified Semi-Modular ATX Power Supply ($39.99 @ Newegg)
Total: $813.31
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-10-04 12:46 EDT-0400

Since you already have the other items you can build new for that price.

 

[Lirik]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-6600K 3.5GHz Quad-Core Processor ($227.99 @ SuperBiiz)
CPU Cooler: CRYORIG H7 49.0 CFM CPU Cooler ($34.88 @ OutletPC)
Motherboard: Gigabyte GA-Z170M-D3H Micro ATX LGA1151 Motherboard ($106.99 @ SuperBiiz)
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2133 Memory ($67.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.49 @ OutletPC)
Video Card: Gigabyte GeForce GTX 1060 6GB 6GB WINDFORCE OC 6G Video Card ($239.99 @ Newegg)
Case: Cooler Master N200 MicroATX Mid Tower Case ($45.99 @ NCIX US)
Power Supply: Corsair CXM 550W 80+ Bronze Certified Semi-Modular ATX Power Supply ($39.99 @ Newegg)
Total: $813.31
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-10-04 12:46 EDT-0400

Since you already have the other items you can build new for that price.

Thank you very much. I took off the harddrive and got it down to 760ish. I will probably be buying these parts in a day or two.