AJLynn

That's completely different. Renderboxx is nothing more than a high end PC in a rackmount case. Consider how much render node power you want, how much you're willing to spend and how much it matters to you that you can put it in a smaller space, versus the price and the price difference for competing technologies (such as a bunch of normal PCs, or other manufacturers rackmounts because a Renderboxx rackmount PC is no better suited to rendering than any other rackmount PC with similar specs.

Also remember that these things generate a lot of heat - a few hundred watts per node. So the room you put it in needs its own cooling. If you put a rackmount in a small back room without adequate cooling, your hardware will overheat and fail.