So yeah, i noticed a bug in iTunes search results and thought i should share it with the others, just in case you get a support mail sometime asking if your app is available in a country or not (although its set to be sold worldwide).
I also sent this bug report like this to apple (hope it helps 
)
There is a bug on the search results page in iTunes which makes a warning message come up that says that an app is not available in your country´s app store although the app is set to be sold worldwide in all app stores and the app is also buyable from this country´s app store in other ways.
I have made a screen capture recording of this bug in action, have a look here:
www.stimunationgames.com/betaFeedback/iTunes/iTunesStoreSearchBugCapture.mov.zip
A short explanation on what is visible in the capture video:
-I search for an app (an app that is set to be sold worldwide)
-The results of the search show up
-On the results screen there´s the “Applications” panel at the top showing the application icon and name. When one clicks that, one can buy the app.
But when one clicks the application name link in the “Album” section of the list at the bottom on the search results page, it shows an error saying the application is not available in this country´s app store (this is the bug).
I tried this with many sold apps and also after logging in to other country´s app stores and its always the same, the link to an app in the Albums category is buggy.