Best price I've seen for this title, Amazon are £17.91 and Play.com are £26.99(?!).
Metacritic score of 93% based on 84 reviews, and definitely one of the top 10 games I've played in the past 15 years. If you've not played it, this is the ideal time to try it. I can't see second hand copies changing hands below £16 so you could always sell it if you don't like it :)
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