Credits to hifer
You can purchase the Jabra Elite Active 65T headphones for 29460 points, however if you move the slider all the way to minimum points and maximum pay, the total comes to 2k QFF points + $215.12, i haven't seen these for cheaper than $280 on ebay so its a decent $50 savings.
You can also do the same for the non-elite models, comes to around $185 + 2k QFF
If you value the points@1c/point then they come to $235.12 and $205 respectively
I'd value qff points at 3-4c (eg for business class upgrades) so not much of a saving imo.