I got the Extra Mile pitch today, but I didn't really understand what it was about.

The offer leads by saying that I will earn a fifty percent bonus on all paid flights next year, and then offers three levels. Each of the levels has a different cost and a different number of miles associated with it.

What does it all mean? Is the mile level associated with the level the limit on your Extra Miles earnings? That is what the structure of the chart suggests, but it doesn't jibe with the statement "earn miles on *every* paid flight between ...."

Can anyone explain this offer?

jh