Mine's the smallest that they make, they are sold the world over and must all come from the same Chinese factory.
Here's the link to mine -
https://www.machineryhouse.com.au/S648For making brass/copper boxes its just superb. The shear is effortless (I didn't show it in the video, but there is a spring loaded lock down device that automatically holds down what is being sheared) and the brake folds metal perfectly. The brake and shear are easy to use and operate.
Now the roller. The roller can be frustrating as its all done by feel. There's nothing to dial in so to speak and it takes a bit of guessing and fiddling around to get just right. Before I try rolling expensive plate like copper/brass I practice on sheet metal that I get from the local tip from the sides of washing machines and other white goods that have thin steel etc there's a limitless supply.
The more you use the roller the more you start to learn how it works and for me there was a learning curve.