A family member wants a Christmas list off me. So I go to look and see what's available for the DS in the UK... and boggle. I love this system, I can come up with a whole pile of games I'd like to have for it. None of them are available.
(Well, technically, Professor Layton is listed on amazon.co.uk - for sixty pounds minimum. Which is just people being silly for Christmas, the game can be bought for a reasonable price elsewhere.)
But most of them just aren't on sale in Europe. Some will be, eventually. Others will never bother. And all of them will cost an awful lot more, bought here.