Amazon Prime according to a research survey by Cowen, penetrated nearly 40 percent of the U.S. market, with some 41 million members, according to a survey of 2,500 U.S. shoppers. An earlier research by NPD group indicated that over 24 percent of US Households had at least one Amazon Prime account.

For a limited time Amazon Prime is available at a discount according to a CNet Update. Amazon Prime membership is on sale until Sunday, for USD 73. Amazon Prime packs a host of free services including Instant Videos, video Game Discounts. For a detailed list of Amazon Perks, Click here.