Great price for a great game to play through before jumping onto the newly released Dishonored 2.
This was a preowned version bought in the Smyths Toy Store in Leckwith, Cardiff. I assume preowned price will be the same throughout their stores.
As a bonus, as of today, CEX also give you £10 credit for the game or £6 cash (which Game will match plus £1 if you have a local CEX and Game store). That means you can turn £3.99 into £11 by buying this and trading in at Game and matching CEX value.
Might be hit and miss whether you find one in your local Smyths, but it should be a game that's offloaded by a few now that the second incarnation is out.