How much do you value the Qantas point? And how much are you willing to pay to acquire Qantas point?
While Pointhack and others often give Qantas point a value at roughly 2 cents and above assuming they can be used for J classic rewards or upgrade, I often consider the value of point as the immediate value I can get when never I want/need it, and therefore I only value it at the gift card vouchers that can be redeem any time, and used for various necessities (food, petrol). What is the value of "money" if you cannot use it when you want/need, and also nobody else out there could buy your "money" according to Qantas T&C (if it can be traded, actually it would have a value that is defined by the market. For example a house cannot go down too much in value as there will be people jumping in to buy on the fear that if they don't, someone else will get the house first).