Producer Cart : Not sure about it...

For 100 euros, you get 14U. But instead of a studio rack, this could be anything else. I mean that the holes are so close to each other that IF one (or -even worst- more) racks are a little bit bigger (like my MOTU 896HD which is 0.000001 mm bigger) you'll have serious problem. Also, try to forget heavy bass or a sub system near to it, as the iron sides are giving you some "sweet" harmonics. You win a big space to work on and this is a plus. In general it's good for what you pay. I'll think twice before I end up with another one though…