some Y are more bearable and humane than others. check out Japan air Y class.
buying ex hkg PEY at 20-25k hkd is the biggest ripoff of all times and you are exact Prey CX is trying to cannibalize on. dont fall for it. dont forget you need R or W class which are more expensive PEY subclass that allows points upgrade. you can get JAL PEY or even J on sale for it.
skyscanner.net offes quick view of fares. you see why i hate CX pricing policy.