The problem in this case is that we don't know what the motherboard is, they don't list it on the spec sheet:
- While the RAM is from a good manufacturer, the RAM speed and latency is also unknown
- The PSU manufacturer, quality and rating are also unknown
- Case quality and ventilation unknown
- Installed cooling unknown
- No doubt it will come with a bunch of bloatware crap pre-installed
Don't get me wrong, on the face of it it's not actually a bad buy for the money, however there are too many unknowns in what I'd define as important areas (motherboard and PSU). You're essentially taking a gamble on the quality of components that make up the heart of the computer.
If the motherboard or PSU fail then these are two key components that can take out other critical parts with them and for that reason I couldn't recommend a pre-build like this in good conscience.
For them to sell it at this price they have to be cheaping out somewhere, and unfortunately it's likely to be the motherboard, PSU, case and cooling in this example.