From all indications I've seen (google "app store pricing tier") your support contact at Apple is mistaken. In any case, wouldn't you tend to believe the individual who actually deals with this stuff (Ken) over a person who does not (the support rep)?
Hard to see why Apple would go to the trouble of allowing a developer to set the exact price for every country — that just isn't the Apple way!
Here's another thread from a few months back:
http://www.mactalk.com.au/56/96475-p...app-store.html