I transfer money all the time between countries, SWIFT transfers aint cheap, about 30 quid usually, it's very safe as far as sending / receiving money is concerned but you have to trust the seller as there is no comeback if they decide not to send the item. As your the seller it doesn't matter though.
** top tip, if your transferring large sums of cash, send it in less than 10k lumps, it doesn't flag up to the tax man then **
