I think they are taking advantage as everything thats been released in the last 2 months has been seen, done & dusted by the masses.
We know DKS is a Grade A title. It has not been treated like one by the stores but looks like GAME know what it is now so it has become the perfect milking trade in (your Fables, Black OPS & Need 4 Speeds) title I would say.
Think I see Gamestation selling Black OPS for £44.99 new not sealed. Second hand.... £42.99. Friggin WRONG as the dev's and the buyers are being robbed!!