Link takes you to the product @ Pc World for £79.97.
However, Amazon are selling it for £44.50 (I'll put Amazon link in 1st response)
Simply phone Pc World on 0844 561 0000 and they will price match plus 10% of the difference.
As Amazon is free delivery, they also price match that so the price you pay is the delivered price.
I worked out this should cost me 79.97 - 44.50 = 35.47 less 10% = 3.54. Thus £44.50 - £3.54 = £40.96..... However, the chap i spoke to worked it out at £40 dead! Of course i agreed :)
I've checked my account and £40 has been debited.