In the UK your statutory rights to do with distance selling regulations protect you against such retailers. Besides, their inability to fulfil their part of the bargain probably constitutes breach of contract. Fight it and you will get your order cancelled. Like someone said, you don't sound like you are in a hurry, nor do you mind which version of the iMac you purchase. Wait a couple of weeks and you will probably be able to get such discounts on Refurb (good as new) stock from Apple directly. Can I also ask you if you are a student or an academic of any sort? Or know someone in academia that can buy it for you? That will qualify you for a 12% discount and if you buy it online from Apple's own website, you will also qualify for a free extended 3 year warranty. Good luck