Just thought id share the info.
It's on offer for £16.99 on GAME in the UK. Not quite as good as the Amazon US deal, but still a good deal. I bought it a few weeks ago, but I've been busy with GTA V and haven't played it for more than the first 20 minutes yet.
It's currently out of stock on the site, but it was when I first saw it, too. It seems to come into stock fairly regularly, then get sold out again. You can set up a stock notification and it'll email you when it comes into stock.