Lower prices have boosted unit sales for Microsoft and Autodesk for Chinese operations. Autodesk now sells its software for about half the price in the USA. Autodesk saw a doubling of licenses in China to 300,000 after slashing prices. Microsoft sells Windows 7 Home Basic for 399 yuan or $59, a third of the price in the USA. By reducing margins, Microsoft makes up for it in volumes, says Microsoft's China CEO. IDC and Business Software Alliance estimate that 79% of the PC software installed in China in 2009 was pirated, down from 86% in 2005. Lower prices make Chinese buyers more willing to invest, and education helps to increase the value of using legitimate copies. China's PC market is expected to be 67 million units in 2010, behind 78 million in the USA, but software sales in China are only $5.8 billion, behind the US sales of $143.6 billion. This makes the potential for software sales large at the right prices.