My BS honest opinion, the canistor looks worth it. Don`t expect much of the rest. Will end up replacing the bat clips, leads, chinsy plastic adapters.
Lets be honest, you only want a machine that produces smoke at very low psi. Notice the bbq regulator!!
So that is what your buying for 140$.
I would buy it, throw out the rest of the kit. Make my own much like I did, and move on. That smoke canistor, again, looks bullet proof. The rest; not really