Hi @Xander. I always list my coins to ship worldwide but will only do so using the Global Shipping Programme (GSP) despite me knowing full well that the poor old buyer will have a ridiculous chunk of postage added on.
The reason is to protect myself, once the item gets to the GSP depot in Lichfield, my liability as a seller ends- I don’t have any worries if the item doesn’t reach the buyer, eBay/ their shipping agent shoulder the claim- in apparently all cases for example, I sold an item to a buyer in the USA and they had used a credit card Fraudulently and again, I had no liability and the payment I received was not even put on hold.
Ebay is the Wild West- for sellers, buyers have all the protection they need in the majority of cases. Like @AppleZippoandMetronome Says, I would contact the seller and ask if he could send you an invoice with direct postage from him- he can then do a risk assessment of you based on past feedback/ your interaction with him etc. etc. And he might well oblige- I do if I’m reasonably satisfied of the buyer- or perhaps ask to cancel the order.
Don’t also expect a 5 star service from eBay’s shipping partner under GSP if you do go ahead. I shipped an expensive coin to Germany and the buyer told me he came home to find it on top of his wheelie bin!
To summarise- I know it’s a rip off and makes my items uncompetitive at times however, GSP affords me protection as long as it reaches their depot.
Unfortunately, not all of us who use eBay are decent, it’s tiring hearing from ‘dave1234’ by eBay message asking ‘ere mate, have you shipped the coin yet- and when you track it, it’s already signed by ‘Dave’....some people want their cake and eat it, and then take another lump...