My children have enjoyed device immensely. I have 5 children still at home ranging in age from 5 to 17. The 5,8,11, and even 13 year old kids love this. In my house the interest wanes for my 17 year old, but she has move on to bigger toys.
We primarily use this for cardboard for which it works very well. I think we will still use scissors for paper and cloth. The cuts in cardboard are clean. The machine makes very little mess (except for the piles of cardboard scraps from all the projects of course).
The cutter is not rotary, it is a nibbler. This means that the machine can only cut along one line. This took the kids a little to adapt to as the tried simply cut in all directions. However a little practice and they figured it out nicely.
The company produces premade project kits for kids. I personally don't think we will purchase these as my children like to imagine and make things of their own. I could see how we may use these as periodic treats or used to teach new methods.
The machine seems well built. Time will tell how it holds up the the hours of daily use this things is getting in my home.
I would recommend this product if you have kids who love to create and build things from cardboard.