Otherwise, the game is just too short and I think that as is so often an insult to a normal price of 60-70. The development here unfortunately many manufacturers the same - short main game and then do it again nicely Extra coal with DLC's. I buy games only used or if they are cheaper (Exceptions prove the rule, such as The Last of Us was his money worth and since you had 16-20 hours of what).
Story was quite nice and the gameplay itself also. As beautiful as the sequences pass directly into the game.
London looks really fantastic, just a shame that it is usually dark and you do not really see much of the city.
So for 30 the game would be recommended.