I managed to get this set a month early from Tesco Direct and paid £10 for it. I have to say, it's a neat little set. The figures are great, but the build is simple, are there aren't a lot of exciting parts.
Going back to the figures, they are much improved over the older versions. Harry's face is a bit babyish, you can see it here, but I think it works for this set. The new Hogwarts uniform now has backprinitng! Yay! The new head for Dobby is really great and has some nice printing on it. Malfoys face looks a little weird because his hairpiece so far back, that it looks strange, but it's nothing to cry about.
Like I said, the build is simple. It's a bit boring, but you'd expect that from a small set. The design of the set isn't as good as the original version, but the figures balance it out.
Overall, it's worth getting if you are a Harry Potter fan, but it's nothing to sing about. I hope this review is helpful!
http://chrissramblings.com/2010/09/02/lego-harry-potter-2010-sets/