Microsoft is planning to drop the prices of its Surface RT tablets by $150, reports The Verge. The lower prices, which will go into effect on Sunday July 14, are likely the result of lackluster sales. Microsoft has reportedly sold just 1.5 million tablets since the Surface RT and Pro were released back in October of 2012 and February of 2013, respectively, with 400,000 of those being the Surface RT. In contrast, Apple sold 19.5 million iPads during the first three months of 2013. HP experienced similarly poor sales with its TouchPad, which was heavily discounted and then discontinued.