that's a lot of money for no power supply. But my biggest criticism is the drive cages... way too much internal space taken up by way too many 5.25" bays where the average builder may only use 2, 3 tops. I would want to see more features in 3.5" detachable cages with tooless vibration isolation drive mountings, not to mention simply more 3.5" bays.
And note the manufacturer's note as written on their web site:
"Important Notice :
Please note that the Robela water case is compatible with most standard power supplies, whose lengths are 140~145mm from the rear of the case to the front.
However, some power supplies, whose lengths are more than 150mm, would be a bit of tight to close the side panel. Thus, we are going to modify it, and the new version will be ready to release soon.
Before that, please make sure to use standard power supplies with the length of 140~145mm to avoid compatibility problems. Thank you!"
Depending on the rest of your system build specs, you "might" be limiting your selection of PSU.
First time build.... might try air cooled, leaving future work in tinkering with water cool, after-market.
good luck