I have a trip coming up in late January booked in PE. BOS-TPE/MNL-BOS.
Just checked and the HKG-TPE and MNL-HKG legs are available for upgrade bids, but the BOS-HKG (and vv) legs are not available for upgrade (at this time, anyway).
Pricing:
TPE: $180 - $720 USD (+$12 tax)
MNL: $180 - $720 USD
Might be worth it for $200 or so per leg, but not much more than that. I can "suffer" in PE for a couple short 2hr flights.
I have another BOS-HKG trip coming up in 9 days, but it's not showing eligible for Upgrade Bid. Any idea why that might be? According to CX, they've rolled out Upgrade Bid to all destinations aside from India and Japan.