I've posted it on kijiji. but I dont know what a reasonable price to ask for would be. It's three years old but in excellent condition.
Specs:
Intel Core i7-6700K Skylake Processor 4.0GHz
Nvidia GeForce GTX 1070 Graphics card 8GB GDDR5
Toshiba OCZ RD400 Series SSD PCIe NVMe M.2 512GB
(Sequential Read: Up to 2,600 MB/s;
Sequential Write: Up to 1,600 MB/s)
32GB 2400mhz RAM
4K 60hz Screen
RGB Backlit Keyboard
Specs:
Intel Core i7-6700K Skylake Processor 4.0GHz
Nvidia GeForce GTX 1070 Graphics card 8GB GDDR5
Toshiba OCZ RD400 Series SSD PCIe NVMe M.2 512GB
(Sequential Read: Up to 2,600 MB/s;
Sequential Write: Up to 1,600 MB/s)
32GB 2400mhz RAM
4K 60hz Screen
RGB Backlit Keyboard