Having this exact nightmare. ebay thinks my item is a medium parcel size when it's almost 2 metres long and weighs 30kg. I'm getting options for medium parcel and that's it, and £6 postage costs. Woefully inadequate, just plain ridiculous.

I came back here to sell some stuff because I want a better buyer base but I'm now back to FB marketplace, because at least it's easy and not stressful like this utter nightmare of frustration.