If you can convince them to take it to a Pack n Send store (they are everywhere) the shop will package it really well and ship it, you pay the store once they have it in hand.
Their service is brilliant, each store ses to be owned individually so good service is a given.
Perhaps give the seller some money for time and effort.
Iirc P&A may even pick up? I may be dreaming that.......
You have it sent to a store suitable to you and there you go.
Unpacking the formidable pack job is difficult....