Just saw this article from CNN.com about things NOT to buy at a “dollar store”.  http://moneyland.time.com/2012/03/12/the-best-and-worst-buys-at-dollar-stores/?hpt=hp_c2#anything-with-an-electrical-cord.  I would whole-heartedly concur.  The article clarifies that an electrical appliance of any kind should bear an authentic UL listing.  Generally speaking, I would personally be leery of anything electrical being sold at the “dollar store” level.  Quality is something you just don’t want to mess with when it comes to the safety of your home and your family.