About the same time I was thinking it, AirNZ emailed me and advised me that I could bid to upgrade my economy seat to Premium Economy using OneUp...
Minimum bid is $300, maximum is $1500
For $600 more than I paid, I could have gone Premium Economy at the time of booking due to some sale that was on..
According to the system I could also paid $1500 now to upgrade to Business class.
I am thinking about chucking in a $300 opening bid .. expecting it to be declined, but I am wondering if anyone has had any success with OneUp, especially for us that do not have any form of membership to anything.