I bought this book and read it on a long coach journey to Strasbourg. At 336 pages it isn't too long, but isn't over quickly either.
In my opinion, this book is now one of my all time favourites. Orwell paints the picture of a people, suppressed by power and a lack of accurate information. It is chillingly dark from start to finish, especially part 3. Thus it is every bit deserving of its critical acclaim as one of the most important novels of the 20th century. Most people have heard of room 101, and Big Brother; this book isn't everywhere for no reason.
Buy it, read it, love it - especially at the price it is on here. Just watch out for the thought police.