Sorry if this is a repeat of any reply, I think it deserves its own topic.
In case you didn't know, The Witcher 2 is now available at Good Old Games.
Linky. In case you don't know what that means: DRM FREE, A LOT OF FREE CONTENT (Soundtracks + some tracks exclusive for GOG, wall papers ... etc ...).
I think that this is THE WAY to purchase The Witcher 2, unless you're into the collectors boxed edition (by the way, GOG includes a virtual edition of the collectors box :-)).
ALSO:
you get one of five epic RPGs for free. Link.