You just have to be mindful of tools like this, they work the same but are not the same as their expensive cousins.
They save money by either not using, or going the very cheapest route possible on things like switches, cord grips, thermo-overload protection, plain brass bushings instead of bearings in the fan, no glass fiber in the casing, etc. etc. All these little things are why they can get you a tool so inexpensive.
As long as they are not DOA, you keep an eye on it, you get a good tool for not a lot of money.

Lee