1375 is a VERY limted fare.
I've looked a month on.. Not available.. 6-8000 HKG for a Y class ticket.
Flexi Saver
From HKD 6,862
Cancellation fee applies
Flexi
From HKD 8,122
ALL the promo fares you see are extremely limited.. The planes are full.
AND they are charging a bucket full.
Thats the way it is.
EDIT>> Same dates on CX yield a fare fo 3500 HKD
NOTE : To Revenue Management... you need to charge more!!