Now bear with me. Should be able to use instore this instore as showing out of stock at the moment online but if not cos we all know they can't always be bothered to help you out.
But if you want to order online stock expected soon and don't forget you can always cancel if it goes cheaper before it comes in.
Click on reserve and collect then find store with stock but then click change to delivery. It will then say out of stock but also say click continue to have it delivered asap when in stock. Enter the code 75LSTV and boom bobs your uncle. Or even better go to John Lewis find and get em to price match if you can show them a store with stock and the code.