Any time that I go to the store I always like to walk around and see what is on sale.  While doing this the other night, I came across a couple of room air cleaners that were marked down quite a bit.  Since I had been thinking about purchasing these anyways, I went ahead and grabbed them and brought them home.  Now that I have got them set up and they are operational, I am happy that I was able to get them at such a great price as I am noticing a difference in the air and the only regret I have is that I waited so long to purchase them.