(Looks like you double quoted me).
It's a Zotac Magnus EN1060 that I've upgraded the CPU on (it's socketed). There's also a version with a 1070 in the same case, and "larger" but small model that has a 1080 and water cooling.
I've actually got a few EN1060s (I am game developer, think multiplayer testing), and in the process I've optimized my purchasing, so the price has varied a tad over time. So let's see what it would cost to duplicate right now:
Zotac sells the EN1060 in a few different SKUs. As of today, Amazon has the Barebones (no RAM or hdd) 1060 w/ i5-7500T for $850 and the barebones 1070 w/ i5-7500T for $1050.
Since I was swapping the CPUs out with i7-6700T and i7-7700Ts, I found the i3 SKU that comes with the i3-6100T and 8GB RAM to be a better deal (it also has a throw-away 32GB m.sata SSD). Amazon has it for $870, but it's frequently on sale at newegg. For the next couple days you can get it at newegg for $599 after promo code. At it cheapest, which maybe could happen again for black friday, it was $499. For games, it was better than the older sku with the i5-6400T because of CPU clocks ( the i3 is 3.2 vs the i5-6400's 2.2-2.8 ). It was also on sale direct from Zotac's online store for $560 a couple days ago (expired now, has been that price before), which has the advantage of no sales tax outside of CA.
As of this moment a 1TB 870 EVO M.2 drive is $228 on amazon, and an 8GB stick of Crucial DDR4-2400 (SODIMM ) is $65.
So, without the CPU swap (which you can't easily do right now as the 35w TDB i7s have been out of stock everywhere the last couple months), and going for the i3 (trade cores for clock speed + HT) you could build one today (16GB, 1TB M.2 970 evo, 6GB GTX 1060, 3.2gz i3-6100) for $893 + tax. Which makes a decent game machine, though not bleeding edge.