It's not bad, but also not good.
It seems to be solid with no obviously cheap parts or switches. Furthermore, it runs smoothly enough, but it is definitely a cheaper scroll saw. It has no light, which I have to work around. It also has a weak blower. I end up assisting with an occasional puff. You have to loosen the tension knob in the back to change a blade, so I avoid inside cuts because they are annoying. Lastly, the foot that holds the wood down tends to slip.
I am glad I bought it for quickly getting my kids going in woodworking. I don't worry about them messing it up. That said, I am getting something nicer for myself.