Clarify costs on my credit card printout when buying apps. I have a iPad 2. In my credit card printout, I have a cost from an app I bought in the AppStore. But I've only installed free apps.

If I lookup what apps I've installed, I cannot see their costs, because I can only see "Installed" information. How can I see the App price when I install it?

Or there is a way to check what I bought and what is charged me?
If you open iTunes and navigate to Store &lt; Show account, there is a history of what you bought including the date and price for every transaction.

I'm sorry for the Dutch language in the screenshot: