When I received these offers I contacted QR to find out that even if i did upgrade my ticket (for more money than just buying the J ticket outright) I would NOT receive the additional Q-Points nor Avios associated with a J class ticket. So, they made an offer for me to upgrade, pay MORE than if i had just bought it to start with AND not get the additional q-Points nor Avios. I guess they think we are all suckers...