Shouldn't really matter how much is the shipping turns out to be. You bought the item with 20 pound shipping specified and it is a seller's problem if he underestimated it massively ( doubt that).
I guess that the price the auction ended with was low so seller tries to screw you with shipping to get some more dough back.
Just my opinion. 20 pounds is reasonable if you look at the completed listings.
Shouldn't really matter how much is the shipping turns out to be. You bought the item with 20 pound shipping specified and it is a seller's problem if he underestimated it massively ( doubt that).
I guess that the price the auction ended with was low so seller tries to screw you with shipping to get some more dough back.
Just my opinion. 20 pounds is reasonable if you look at the completed listings.