I have tried to ask Emirates themselves but they can't give me an estimate of how many points I would need to upgrade my economy saver ticket to business.

I do understand the reasons behind WHY they can't give this to me, so please no lectures on that. I am simply looking for other people's experiences so I can figure out if i have enough points.

My flight is from Manchester (England) to Auckland (New Zealand) via Dubai. I would want an upgrade for at least the 18 hour flight, but ideally for the whole thing.

Thanks in advance