The rear fan appears to be shared with the CPU fan. This is actually not a bad design in my opinion, many Dell OptiPlexes from around 2002-2009 were built with

The rear fan appears to be shared with the CPU fan. This is actually not a bad design in my opinion, many Dell OptiPlexes from around 2002-2009 were built with a similar design. By putting the fan farther from the grille, they can reduce the effects of noise from the blades passing by the stationary grill. The fan appears to point inwards, which seems to make more sense for BTX Dells with the fan at the bottom than this with the fan on top. The site mentions the power supplies are 80plus certified or something with (iirc) 90% efficiency or so. Quality of the case wise it does look like quite some effort was put into it, given the top appears to be one piece and it certainly looks harder to manufacture than a standard PC case. With that said, as much as it is nice, I think it's just more of a standard PC with a nice case.