On GAME's website the 120 Gig HDD for teh 360 is £99 when bought with anything.
If you go and add something like a scart block for £2.99 the offer will still work.
THEN!!!!!If you add the £3 off voucher, it knocks it back down to £99.98
This Offer is also availavle instore at GAME (I priced it up at my store last week)
EDIT!!! AS POINTED OUT 11% QUIDCO TOO