Geez pre-builts are expensive. For $2000.00 you could easily configure a PC with two 980 ti's running in SLI. The $2,000 computer here only has a single GTX 970, a non-ssd hard drive, and only 8gb of ram.
I thought I overspent at $1,500, and I have a water-cooled i7-6700, a 512gb SSD, and a Zotak 980 ti Amp Extreme, and 16gb of ram. So for the same price as the pre-built one listed, I could add a second 980ti, run them in SLI and still come out under the price listed as the pre-built and have like 10 times the power. I guess don't regret the frustration that came with building my own. A few hours of troubleshooting was worth it by a wide margin.