Just saw the £335 price myself and yeah there is tax on top for £438 total. You can get the exactly same price as early as Jan 10th though
No such ****ing luck last year...
I'm wondering actually if the prices won't drop further nearer the time, sites are advertising May rates as the same but I know you can get cheaper come the month. If there are still seats left now for early Jan at the lowest price those ones in late March aren't going anywhere fast.