@david: Some sellers, say, in the US, only sell in the US, only ship within the US. Those items won't turn up in an ebay search in another country's ebay. If you have the item number, though, and construct a link with it like @EskeRahn did, they'll appear in that other country's ebay, too. You still won't be able to buy the item, though, if the seller doesn't want you to.
(I wanted to buy excactly such an item a few weeks ago, the only sample that I found in all the world's ebays, but the seller, who wasn't publishing any contact details, didn't even accept messages from other countries t