This script converts the prices at each detail page on amazon.com, amazon.ca, amazon.co.uk, amazon.de, amazon.fr and amazon.cn from each local currency to JPY.
It is useful for Japanese who want to buy from there or to compare the prices.

It might be better that the script convert to not only JPY but also any other currency.
If the rates of currency change, users out of Japan might want to know how much stuffs they want to buy cost in Japan.