I'm not gonna go on and on about the storyline, characters or gameplay; you can read one of the countless professional reviews for that. All you really need to know is that, as a big fan of JRPGs, this really hit all the right buttons for me. Plus, it's nice to hear a largely non-American voice cast in a game for once. Nintendo really surprised me, in a good way, by giving this title such a big marketing push, as it would probably have flown straight under the radar, otherwise. So, mega-kudos all 'round!
The Classic Controller Pro is great. For one thing, this is the only way to get one in red, which is especially important if you have one of the limited edition Mario Wiis. And, Xenoblade really isn't made for the standard remote controls, anyway. There is one nitpick, though: the CCP feels slightly lightweight and doesn't have built-in vibration. Also, it isn't quite as comfortable as a GameCube controller (but then, what is?), but it's still very good.
In conclusion, this package is highly recommended. I'd say £40-50 would be a reasonable price, £60 maximum, though, unless money is no object.