I know this deal applies to students as it was advertised at my University, but I think anybody may be able to use it as all you really need to do is to to enter the promotion code.
Campaign - Was £155.00, Now £31.00 - (Code - CAMSTB9)
MediaWeek - Was £145.00, Now £29.00 (Code - MWKSTB9)
Marketing - Was £150.00, Now £30.00 (Code - MKTSTB9)
PRWeek - Was £135.00, Now £27.00 (Code - PRWSTB9)
Revolution - Was £85.00, Now £17.00 (Code - REVSTB9)