According to Consumer Report, February is the best month to purchase. See the items below.
-Elliptical/Treadmills
-Humidifiers
-Furniture
Stores are usually trying to get rid of all these items for new stuff coming in April.
SOURCE: http://www.consumerreports.org/cro/news/2014/02/products-on-deep-discount-in-february/index.htm
