We have been offered an upgrade on Emirates flying from the US to Dubai for an additional $1000 each - we are two people.

Is this offer in line with what is typically available for an upgrade? I assume that this is not something that is negotiable. I was informed about this in an email which said the only way to get the upgrade was to follow a link ..... it could not be done by calling Emirates or trying to do it at the airport.

FWIW, we did get a great deal on the round trip economy ticket. We have a stop in Dubai before we connect for our onward flight.

Would appreciate any advice from those experienced flying with Emirates.