What is the cost for this EXPO fun?

The 2010 World Expo in Shanghai, to run from May 1 to October 31, will benefit from an estimated budget of 28.6 billion yuan (US$3.7 billion), it was revealed on Tuesday by Zhu Yonglei, deputy head of the 2010 World Expo coordination bureau.

http://www.bjreview.com.cn/lianghui/txt/2007-03/14/content_59120.htm