Don't know if this is the right section but thought I'd ask. I'm in the UK and the 'Live Chat' support on the Apple UK website is closed as it's 10.20pm here. Anyway. We purchased a 5K iMac a couple of weeks ago (12th January) however as it was a custom/upgraded spec (4.0GHz i7, M395X) it took a week for delivery (we received it on the 19th January). It works perfectly, however we have decided that a Retina Macbook Pro would better suit our needs and we would like to return this iMac and exchange for a rMBP which costs around £500 less. I don't want the hassle of returning it to a Pickup point or waiting for Apple to collect, so want to return it to my nearest Apple store (which is 45 minutes away). Can I do this? Will they be able to process the refund of the price difference AND allow me to exchange for a rMBP (if they have it in stock)? I am NOT the credit cardholder - it is in my wife's name. However, I have the receipt/invoice and I have the original credit card (again not in my name). Will this be sufficient to process the exchange/refund? I understand the refund of the difference (approx £500) will be refunded directly back onto the credit card we paid with, which is fine.