I'm with wayner on the price, $1800 sounds a bit insane, even with manual assembly.
Regarding the precisely defined certification and the new 30 degree ambient, I'm all for those. In the summer I see 28 to 30 °C daily in the workspace, and never does any part of the house go down to 21 (regarded as "normal room temperature").
Case: Define Mini
Parts: P8Z77-M Pro µATX, i5-3570K, N650Ti-1GD5/OC, 8 GB G.Skill DDR3U, Xonar DX, WD G 1 TB, mx100 256 GB SSD, RX-5300 PSU
Cooling: Noctua NH-U12P SE2 + Scythe SS PWM, 2x Noctua NF-P12
Extras: Eaton UPS, Dell 24" EIPS, Ducky TKL, SteelSeries Sensei Raw, Synology DS213j 6 TB NAS
idle-load: CPU 32-44 °C @ 300/600-600/800 RPM, GPU 35-65 °C @ 1200-1650 RPM