50mm is good if you have a flying bus board. But don't even think about getting one of the proper (small) boards inside this. The Befaco skiff is also 5cm deep but the backside of the case doubles as bus board. This takes away 1cm at every position of the 14 power connectors on the board
Not sure how low cost it really is with added power, but I like the looks. Could this be also made from other material other than aluminium?
The Machine: https://www.modulargrid.net/e/racks/view/1601144