They're advertising 40-60% off games, but haven't released a list of games or prices yet. The video gives some clues:
You can get gold for £20 so I doubt it will go that cheap. 12 Month Xbox Live Gold Membership (Xbox One/360) - cdkeys.comCheap gold, and a few games would be nice, might need a bigger HDD soon as well.
Was wondering if other stores would also be 40-60% off as that could make for some real bargains.