Just popped into my local comet where I very nearly bought this package. Basically they are giving you two free games and asking you to pay £30 for the third but these are pretty good games: Far Cry 2, Saints Row, Brother in Arms, Sonic Unleased, Star Wars Force unleashed, a WWF game and another I cannot remember.
EDIT: Only four of these are available online but I was offered a better choice instore even though Sonic is not yet released!
Perhaps even better, they have a similar package that includes a HDMI cable and Tony Hawks. So that is four games and a cable for £349.
I have searched these forums looking for a good PS3 deal and this does seem the best; £120 worth of games for £30.