I bought 2 tickets (as they came as a pair and couldn't buy a single) from Ticombo for just over £800. They are cat 1 so better value % mark up wise than lower categories. Selling the other for £400 to split the cost if you're interested?
My option for a single cat 1 on Ticombo was £370 but with fees added on it came to £481, so hoping my gamble pays off. Email me if interested as I don't always check on here (paul19821234567@hotmail.com)