Published in June version of Atmosphere magazine.
This is not such a bad deal.. For example Z to Brazil is 3300$ + 2*1400$ (to make it F both ways) = 6100$ which is much cheaper than the price of A and the points are almost the same.
Or get Y class and you can probably get F to Brazil/Los Angeles for about 5800$
Of course assuming there is availability and not getting the points and the "Extras"
Best
ysmisc