Peter47 -
£2.80 is more than reasonable - more like remarkable. When I was rebooked (when ANZ dumped the route) on the CX HKG - LHR flight last year, with only 80 minutes to connect from the ANZ service from AKL I was told that I couldn't book a seat at all, for any price. The thought of getting to HKG after 11 hours and then having to scrum with ?00 locals for seats didn't appeal so I had to go AKL - LHR via LAX.
Even that route has got silly now with ANZ. On NZ001 and 002 only about half the economy class is "free" seating; the remainder - and of course all the exit row and 2seat blocks at the rear attract a charge of £100 each way.
Thus LHR - AKL return economy via LAX with a decent economy seat costs £1527!! This compares with £945 in EK A380 all the way!
After 30 years using ANZ I'm gone!