Since the launch of Amazon Australia for digital content, my wish list is a mess. I had a lot of titles on there for my Kindle, and now when I log in, I am told that some of them are no longer available. This is because they are now to be exclusively sold through Amazon.com.au if I am in Australia, though this is not spelled out on Amazon.com. To make it all as difficult to use as possible, of course, my wish list itself is not accessible from the Australian site. So to buy a title from my wish list for my Kindle, I have to make sure I go to Amazon.com, but if the title is not actually available there, I have to go to Amazon.com.au and do a search to make sure I haven't been lied to.
Like I said, a mess.
Mokalus of Borg
PS - I'm moderately confident this will get better in the future.
PPS - Moderately confident, not supremely confident.