It looks like it isn't just the PS3 that Sony prices radically different across the world. The Wall Street Journal carried out a comparison of the cost of a Cyber Shot digital camera in eight cities and found that the cheapest prices were in North America and Asia, while Europe, yet again, paid the highest.
The cheapest price found was EUR 237 in Tokyo while the most expensive was EUR 399 in Rome. The Inquirer who were alerted to the story weren't too impressed and said, "..we don't quite know how Sony thinks it can get away with this. Presumably because it can."