Looks like an interesting aluminium extrusion variant, particularly if it's only PC cases you intend to use it for. The compression clamp fixings certainly look easier to use than T-slot nuts, if a lot less sturdy or elegant, but I could see the lack of compatibility with standard extrusion fixings being a pain in short order, particularly the requirement to use their fairly chunky proprietary end-to-end fixings rather than chopping the extrusion and butting it up with a bent plate to fix it.
RRP appears to be £90 in the UK. Once you've bought all the extrusion, brackets and fixings for regular aluminium extrusion, that's not a huge amount more than you'd pay for rolling your own kit. Makerbeam/Microrax would be quite a bit cheaper, but less sturdy.
