The seller is responsible for ensuring the item makes it to you in cases where both seller and buyer are located in the same country, and the same shipping company or postal service handles the item. In these cases, the seller can reasonably look into whatever shipping problems occur and file whatever claims are necessary to rectify the situation.
In cases where the buyer and seller are in different countries, though, the item is transferred from one postal service to another (not handled by an international outfit like FedEx across both countries), and it gets lost only once in the possession of the buyer's postal service, it's not quite the same story.
If I sell something to someone in Bulgaria, for example, ship it there via USPS, and it doesn't fall off tracking until it's deep into Bulgaria, being lost by the buyer's own postal service, that's not something I as the seller can easily look into or resolve. Making early morning phone calls to Bulgaria and hoping to find someone who speaks English...that's just not practical.
So in these situations the seller should provide the buyer all the info needed for the buyer to contact his own country's postal service. If the buyer's postal service has irretrievably lost the item, the seller should file whatever claim they can from their end, but their own postal service may not make it right, since they did their job and the item only became lost when handed over to the buyer's postal service. So if the claim is rejected, the seller can't really be expected the take the full hit caused by the buyer's postal service's incompetence. In these cases I think it fairer to split the loss.
In cases where the buyer and seller are in different countries, though, the item is transferred from one postal service to another (not handled by an international outfit like FedEx across both countries), and it gets lost only once in the possession of the buyer's postal service, it's not quite the same story.
If I sell something to someone in Bulgaria, for example, ship it there via USPS, and it doesn't fall off tracking until it's deep into Bulgaria, being lost by the buyer's own postal service, that's not something I as the seller can easily look into or resolve. Making early morning phone calls to Bulgaria and hoping to find someone who speaks English...that's just not practical.
So in these situations the seller should provide the buyer all the info needed for the buyer to contact his own country's postal service. If the buyer's postal service has irretrievably lost the item, the seller should file whatever claim they can from their end, but their own postal service may not make it right, since they did their job and the item only became lost when handed over to the buyer's postal service. So if the claim is rejected, the seller can't really be expected the take the full hit caused by the buyer's postal service's incompetence. In these cases I think it fairer to split the loss.