The average cost of Japanese customers wedding is 3.17 million yen according to study

"the average cost for wedding ceremonies and receptions (in Japan) is ¥3.17 million.(2009)"

Source: Strained budgets mean finding new ways to save on weddings

By TOMOKO ARIMA

Kyodo News

The Japan Times: Thursday, Oct. 22, 2009

http://search.japantimes.co.jp/print/nn20091022f1.htm

Further reading:

What MBA programs cant teach you - hands on Japanese culture

Study Abroad Japan