I guess they must play off the fact that the police in Vietnam won't be interested in a few people from outside their country getting taken for a ride for £450. I would have been the one loosing out as PayPal would have credited the compromised account as I shipped to a unconfirmed account and I would then be missing a lens.
I have relisted the item now, but will only ship to certain countries and need immediate payment with PayPal to complete the transaction. This is the first issue I have ever had with Selling on eBay in all the years I have been on there. I have found most people to be very honest, where ever they are in the world. I posted a set of headphones to Bulgaria today, I am confident that will go ok as everything checks out.
Cheers
Cris.