A deal for Mac users. Cheapest I've seen so far, retails at £69.
You can order this online but have to pay delivery or you can order it in store for pick up at a later date for free. I've checked and they can definitely order it for collection as they have plenty of copies at the main warehouse. Sku is 519634, its on the comet in store catalog so a member of staff will be able to find it for you if you forget the sku.