I've been keeping an eye out on Skyrim guides recently (as I'm not very good at the game) and noticed that you can import the hard backed collectors edition guide from Amazon US for just a little more than you can buy the paperback version in the UK.
It's currently up at $21.99 (postage is another $8) which brings it up to ~$30. According to Google, it's around £19.25. Used guides on Amazon UK are currently selling for ~£50.
Mine arrived today, it took 2 weeks for delivery (but it was over the festive period).