Just saw that my PEK-HKG flight is eligible for upgrade bid....

To upgrade my Y seat (fare class Y), the bid range is from HK$4,520 to HK$9,000, with a suggested bid of HK$6,800......

But to upsell my Y fare seat to J fare, I only need to pay HK$4,800 for round trip (or HK$2,400 one way). So I pay nearly double and get less CPs and less luggage allowance.... Brilliant...

Update:

So happen I also have a HKG-SHA and HGH-HKG flight in system that allows me to put in a bid....

Both are HK$2,000 to HK$5,600 with suggested bid at HK$3,800 (plus $70 third runway construction fee for ex-HKG)... Honestly who will place a bid at such a price?