Don't know where in the world you are but here in the U.K. the Systainer power hub retails for £110 inc taxes. Be hard pushed to find a systainer, 5 outlets, indicator light, thermal overload, 10m cable and a plug for much less and you still have to make it..
I like mine and it mostly powers non Festool's as they are on the midi. It usually sits under the mft. The only improvement would be a USB plug on the inside.