KLM is now offering 350eur upgrade from W to J on PVG-AMS KL896 (14h flight), and unfortunately when I made the booking I wasn’t expecting to carry so much check in luggage with me back to Europe, so I booked my self in Premium Comfort Light ( with 0 check in luggage but my EP status give 1 for free) The price for buying 2 piece of check in luggage is also around 350eur. If they offer business class check in baggage allowance, I will take the upgrade, if they don’t offer it I will buy 2 piece of check in luggage instead.